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College Experiments

By Cimmaron Spirit

Commission for John_doe12346

WARNING: this story contains: medical experiments, transformation, human, wolf, hyena-snake, hybrid, male to herm, hyper, cock growth, muscle growth, breast growth, excessive cum, straight to gay, masturbation, oral sex, anal sex, vaginal sex, M/M, M/H, footplay, rimming, lactation, and more. If you aren't 18 or none of that turns your gears well then you better go find something else because that's all there is in this story. Otherwise, enjoy!

<><><>

“Are you sure about this?" Frank asked, nervously eyeing the needles on a tray laid out in the clean office of the medical clinic, a few blocks from the college he was attending.

A few weeks ago, this seemed like a great idea. He was approached by the commanding officer of the Reserve Officer Training Corps, who gave him the chance to sign up for a research program for a new drug being tested with support from the army.

He was told then that the drug was supposed to help accelerate the growth of muscle and help as a diet aide: basically to keep those that take it strong, healthy and fit, with some extra bonuses to concentration and studying to add into the mix.

It sounded amazing. Frank had always been a bit on the hefty side, with a bit of a gut that, thanks to working out and the weekly drills with the ROTC, was turning more into a muscle gut. He would have liked to get rid of that gut and get some abs, besides just getting bigger and more muscular all around. Being able to focus and not be so distracted was just a nice side bonus, one that may come in handy as he got further into his post-secondary education, and that, along with whatever strength he might build would help when he was to serve in the army for a few years.

But now that the day was here, and they were in the office, and after the physical where the doctor measured everything that she could feasibly measure, including the more personal areas, doubts were starting to creep in.

“We've already verified it's efficacy and safety on test animals," the doctor said, as she looked over the clipboard, scribbling on it with a pen. “So it's not going to make you sick or addicted, I promise."

The tall Hispanic man furrowed his eyebrows, still anxious. “It just seems too good to be true, you know?"

“Hey, calm down dude," his roommate Chris said from the other side of the room. Despite his chiseled jawline covered in a thick black beard, and impressive body, his voice was a bit high pitched, almost feminine, which was a reason why he was ripped from years of working out. “They don't just go inject stuff willy-nilly into people now adays. That's just asking for lawsuits.

“Besides: we're getting paid for this. How cool is that?"

Frank fidgeted in his seat, as the doctor now picked up one of the needles, tapping the side to ensure there were no air bubbles. “It's just a shot in the arm. It will be fine."

The Hispanic man flinched a bit as doctor wiped the spot in his upper arm. The needle came close, so he turned away, taking a deep breath…

And before he knew it, the doctor was sticking a band-aid on his arm.

“There, done," the doctor said.

“Good," grumbled Frank. “I hate needles."

“Would you like a lollipop for being such a brave boy?" Chris chirped with a smirk.

Frank scowled and looked away, knowing that his roommate was never going to let him down for this.

The doctor then turned around and gave Chris a needle as well. He was also in the ROTC program, and also volunteered for the test, though Frank felt it was more for the couple thousand dollars they were each going to get at the end of the trial period.

“Alright, that's the primary shot," the doctor said after finishing up injecting Chris, then going to the counter and picking up two bottles of pills, and two bundles of paper, which she split between the two test subjects. “You will also need to take one of these pills every 24 hours to get the full effects. And at the same time, write down anything you notice differently that you experience. We'll have you come back in a week for a full physical, but for now, go home, rest up, and just do what you would normally do, alright?"

“Alright then," Frank said, rubbing at the spot where the needle had poked him. He didn't feel any different, though it would take more than just a needle poke to change anything, right?

The two guys walked back to Chris' car, with the shorter owner climbing into the driver's seat, and Frank into the passengers.

Frank flipped through the paper as Chris navigated his way from the medical clinic to the house, they were splitting the rent on.

“So what does it say?" Chris asked.

“Just a lot of technical mumbo-jumbo," Frank replied. “Along with some blank pages to be filled out when we self evaluate. Just a bunch of paperwork, frankly."

“Well, papers and forms make the world go round, it seems," Chris said, as he turned the car up the drive way to the small bungalow, putting the car in park and turning off the engine. “But hey! It's not like they are trying to turn us into monsters or super soldiers full of angst in the movies. So what's the worse that can happen?"

<><><>

Frank took the first pill during supper that night, then after a couple hours of studying and watching a movie, he went to bed.

When he got up the next morning with his phone beeping on the nightstand next to his bed, he dragged himself out of bed, slipping out of his underwear and t-shirt he wore to bed and grabbing his towel to go for a shower.

“Guh, mornings," Frank grumbled, still bleary eyed as he stumbled his way to the bathroom that always felt just a bit too small for him. He fumbled with the knobs, before hot water began gushing out of the showerhead and into the bathtub, filling the room with steam.

He slipped into the shower, using his bodywash to get all six and a quarter feet of himself cleaned up, followed by shampoo for the thick black hair on his head.

Rinsing off, Frank was soon turning off the taps and grabbing the towel he hung on the hook and started to dry himself off.

As he used the towel on himself, Frank reached up to wipe the steam from the mirror so that he could shave, but then froze.

Did… did his arm seem a bit bigger?

Frank blinked, trying to clear the early morning fog from his head.

“There… there's no way," he said, looking over his outstretched arm. His other hand reached up to grab his bicep. No… it was bigger. It had to be.

Frank glanced down, to see that his chest was also bigger, and his stomach was a bit flatter, a bit firmer. Even his legs were thicker.

Frank reached down and pulled out the scale tucked under the sink, and stepped on it. He was at 240, a full fifteen or so pounds more than yesterday when he was at the doctor's office.

“Fuck me," Frank gasped, looking back in the mirror, trying to comprehend what just happened.

You don't gain that much muscle overnight, right?

Even supplements and pills online with “miracle" attached to them don't promise results that fast!

He stumbled out of the bathroom, and down the hall to see Chris sitting in the kitchen, wearing a bathrobe that managed to hide most of his muscle, groggily eating cereal, idly flipping through his phone.

“Dude, are you bigger too?"

“What do you mean?" Frank said, his voice muffled by cereal in his mouth.

“You took that pill last night, right? Like… I got some more muscle just overnight! Like, it's crazy man! I look stronger and shit! Did you see it too?"

Chris furrowed his eyebrows. “I have no idea what you are…" he started, glancing over to Frank, before wincing, and lifting a hand up to block. “Fuck man! Put on some pants! I know you're gay, but, shit man, I'm not!" His voice, already high pitched, nearly cracked.

“But, like, look!" the still nude Frank said, flexing his arm, making the hill of muscle that was his bicep bulge larger. “I sure as hell didn't have this before! That drug works man!"

Chris rolled his eyes. “You're just sleep deprived man. I know I didn't sleep well last night." But he pulled an arm out of his housecoat, almost fully covered in a thick layer of hair like most of his body. “See? You don't just… wait…"

Chris blinked as well, feeling over his arm, then flexed it and felt the already large and impressive arms get even bigger. Veins were nearly popping out of skin, visible even through his body hair.

“Shit… maybe you are right…" Chris remarked. “Fucking hell… But still, go put on some pants."

Frank, satisfied that he wasn't seeing things now, retreated back to the bathroom to grab his towel and then off to his bedroom to get dressed. He had classes in less than an hour, so he had to get going quickly.

But that proved to be a bit of a challenge. Being just slightly thicker everywhere on his body meant that his clothes were just that much tighter. Frank was already 6'3", so he already had a wardrobe of the biggest clothes you could reasonably get at most retailers, and even then, everything was snug, if not tight.

But, finding his loosest pair of jeans he owned, and a tank-top that wouldn't be too tight on his upper body, Frank was ready to face the day of classes, with a giddiness to his step at the thought of being able to grow bigger with just a few pills.

The pills also had the other desired effect: Frank found himself able to focus longer and harder on the lectures he attended, even the more boring ones by professors who got their jobs through smarts and not for public speaking. By the end of his day of classes, he felt like he had learned more than he had in a full week previously. Even going to workout that afternoon at the college gym before heading home resulted in a better workout than ever before, able to easily focus on himself and himself alone.

“Those pills really seem to work," Chris said that evening, sitting on the couch and playing a video game with Frank after ordering in pizza for supper, and they both filled out the Day One form of what they experienced. “I actually understood everything that my prof talked about today!"

“I know. It seems so weird that just a needle and a pill could do that," Frank said, as his fingers flew over the controller. Even in the intense firefights of their first-person shooter, they were both doing exceptionally well that night.

“If that is just one day of pills, what will a full week do?" Chris wondered aloud as their match ended. “Fuck, we will be so damned ripped, even bodybuilders will look tiny next to us."

“Well, only one way to find out," Frank said, standing up and heading to the kitchen to get his next pill, and swallowing it down with a glass of water. Chris followed behind to do the same, and they both returned to the small living room with the big flatscreen TV to play a couple more hours of games before bed.

<><><>

The next morning Frank woke up as tired and groggy as he had the previous morning. Maybe that was a side effect of the pill? He would write that down tonight when he filled in the next sheet.

Everything about him felt… heavy. The way the bed groaned as he rolled out of it, the creaking of the floorboards as he walked across them. He even felt a bit light headed.

But it was his junk that felt the heaviest, or at least heavier than it should have been.

Frank looked at the tent in his boxers, and sighed.

“Yeah, yeah, I know," he mumbled, before lying back down on the bed as he slipped a hand to his cock to pull it out, before quickly jacking himself off.

It didn't take long stroking his shaft before he was on the edge, and before he knew it, he was blasting a load over his stomach, chest, and some strands even hitting his chin.

“Fucking hell," Frank panted in the afterglow of the quick orgasm, glancing down at the mess he had just made.

Then looked at his still hard, still throbbing cock.

“A-are you bigger than usual?" Frank asked himself, blinking his eyes to banish the last bits of sleep and tiredness from his mind. He wrapped a hand around his cock again: not to pump out a second load, but to comprehend what he thought he saw.

And, indeed, he was bigger. His dick was thicker than normal: his thumb was just barely touching his fingertips now. The whole shaft felt longer too, maybe an inch or an inch and a half bigger? He had been a bit less than six inches before, so about average for him. But now he was well past that. Even his balls felt fuller, heftier.

“Now my dick is growing?" Frank exclaimed.

It was every guy's dream. Who didn't want a bigger penis?

Frank finally sat up, grabbing a dirty t-shirt and wiping the cum from his upperbody, before pushing his surprisingly still hard dick back into his underwear, and heading to the bathroom to clean up and get ready for the day.

The first thing he did was pull out the scale again. This time it spun around to an astonishing 260 pounds. Another twenty pounds, just overnight?

“Holy shit," Frank said, just absolutely floored by how much he was growing, and how quickly.

“This is… insane," Frank whispered to himself. “And just how much bigger am I going to get?"

That idle thought made him shiver. He had always dreamed of becoming stronger, more muscular, becoming one of those bodybuilders or pro wrestlers he secretly idolized, and in a more heated moment, desired to play around with.

Frank's cock throbbed again, a dark spot forming on his underwear as he started to leak precum.

“God damn, you are really needy this morning," Frank gasped, before wrapping his hand around his thicker and longer dick…

He had barely begun to stroke before he was already blasting a second load. His boxers were now totally soaked, and several shots managed to work through the thin cotton and splatter against the side of the sink and the wall.

“Holy shit," Frank panted, his second orgasm just as strong as the first one he had this morning.

Frank pulled off his now dirty boxers, and tried to clean up the mess he had made. It was impressive, in a lewd way, just how much he was able to cum now.

He went back to his room, pulling on a new pair of boxer briefs and trying to find more clothes to wear. A tank top muscle shirt was still the best choice for his upper half, since no matter how big his arms, shoulder and chest got, it should cover enough to keep him decent. But his lower body was another problem entirely. The pair of jeans that he wore yesterday, which was already the loosest pair he owned, was now incredibly tight. As he struggled to pull them on, Frank could hear the blue denim nosily complaining and creaking as it was forced to stretch over the thicker calves and legs, not to mention the bulge in the front of his pants. But it would have to do for now. After class he'd go buy more clothes that would fit better.

Like yesterday, it was fairly easily to concentrate on the lectures when he set his mind to it. His full slate of classes felt like just a few minutes, and before he knew it, he was packing up to go home.

But as he stood up from his chair, there was a series of loud, piercing RRRRRIIIPPPs that made Frank freeze in place.

He looked down, to see that the seems of his jeans had nearly torn entirely away in several places: his thighs and calves were exposed, and he could feel a draft behind him as well. The button on the front of his jeans had also popped off, most likely lost somewhere inside the lecture hall. To top it all off, his cock was so hard that it had actually pushed the zipper down, the bulge of his larger dick now visible to anyone that could notice.

“Shit, shit, shit," Frank muttered as nervously looked around, and was glad that the noise of his clothes ripping had been drowned out by his fellow classmates talking, packing up and leaving the classroom.

Frank gathered his stuff as quickly as he could, and made a beeline straight for the campus bookstore, which also sold some college branded clothing. He grabbed the largest pair of sweatpants they had on offer, a light grey color.

“I guess it's sweats now, at least until I'm done growing," Frank mumbled to himself as he waited in line. Though, he had to admit, the fact that he was growing enough to just burst out of his clothes was pretty hot…

He glanced down, to see a wet spot forming at the crotch of his jeans where his cock had just let out a large amount of precum

“Fuck," Frank muttered under his breath. The last thing he needed was to be seen as a mess on campus. He didn't want to go completely nude, especially on campus. But his efforts to get over one student was trying to return a book for a class, and complaining about getting just a tiny fraction of the incredibly high cost of the textbook back. But the other student finally took the money and grumbled off.

Frank practically shoved the sweats into the face of the girl behind the counter, and had already pulled out his debit card from his wallet to pay for it and be done.

But the card reading machine was so incredibly slow, requiring several attempts at swiping, before it finally registered his card, and finally let him walk out of the store with the new pair of pants.

Across the hall was a bathroom, and Frank practically ran into the door, before finding the closest open stall. He barged in, turning around long enough to lock the door, and finally let out his breath.

Only for his jeans to now finally fully give up, tearing in even more places until it was just a little bit better than some rags hanging around his body.

“If I knew I was going to grow this quickly, I would have just worn sweats all the time," Frank grumbled, as he just tore off the rest of his jeans.

But then another problem: his penis. It was rock hard, practically begging to cum. Would he be able to get back to the house before he bust a nut?

Frank sighed, and fished out his cock. It was even bigger than this morning: it would require both of his hands to cover the whole shaft now. But he didn't care: he just had to dump a load of his seed so he can at least go home.

So Frank pumped his cock, and with a minimum amount of effort blasting a huge load all over the bathroom stall. He was stunned as shot after shot from his cock quickly coated the toilet and ruined jeans in his spunk. And what a huge amount it was: it had to be almost enough to fill a pop bottle. Frank had no idea that anyone could produce that much semen, and so quickly!

It felt like forever, but eventually the flow tapered off and he was able to sigh a breath of relief, and shove his cock back into his new sweat pants. Of course, the grey fabric did next to nothing to actually hide his big schlong, but he would have to worry about that later.

He tried to clean up a little bit, but the cheap toilet paper was no good. His jeans were already soaked. Finally, with a sigh, he flushed the toilet and the huge amount of cum soaked toilet paper in the bowl, unlocked the door, dumped his ruined jeans into the garbage can and left, hoping that he wasn't going to be cursed by some janitor later for the mess.

But even with a quickie at school, by the time he got home he was rock hard and ready to go yet again.

“God fuck," Frank moaned as he pushed the door close behind him, dropping his school bag in the kitchen and walking past the living room. The TV was on, paused on a game, meaning that Chris must also be home. Walking past the bathroom to get to his bedroom, Frank's ears perked as he heard moaning and grunting into the bathroom.

“Uh, Chris? You okay?"

There was a momentary pause. “I… I think so."

“Really horny?"

“What? No!" Chris exclaimed, before there was a pause. “Well… maybe a little bit."

Frank chuckled. “So you think that few thousand bucks was worth it? Might pay for our new wardrobes. And cleaning bills."

“Oh shut up!" Chris groaned. Maybe it will calm down once our bodies are used to it?"

<><><>

When Frank woke up the next morning, the first thing he noticed was that his feet was no longer under the cover of his blanket, or even on the mattress, while his head was nearly pushing up the wall. He was already pretty tall, but now it appeared that it wasn't tall enough, so his body was now stretching in every direction.

Second thing he noticed was that the underwear he was wearing to bed the night before had finally ripped, the elastic no match for the growing muscles he was sporting, his thighs and calves now so thick that they looked like tree trunks. His ass was also starting to harden and round, turning into a thick bubble butt.

Frank's chest and arms were also bigger, thicker, and all-around god-like. Even his stomach was gaining abs, though they were still stretched around his gut.

“Well, fuck. Haven't stopped growing yet, have I?" Frank moaned, the bed creaked and groaned under his weight.

But the third thing Frank noticed when he woke up was that he was wet. Everything from below his nipples down to his ankles was absolutely soaked in semen and precum, as if he spent all night cumming and jacking off. His bedsheets, his blanket, everything was coated in cum.

But the biggest thing he noticed, to tie into the mess he made, was his cock. Yesterday it was over eight inches before he went to bed. This morning, it was even bigger than that. His bloated balls looked more like oranges now, and seemed quite content to produce as much as it could, and expel anything and everything he didn't immediately get out of his system.

Frank grabbed the ruler he used last night, and pushed it against the side of his dick and his groin. The tip of his cock was past the 12-inch mark, and was still leaking pre from the tip.

“Fucking hell. I'm as big as a porn star!" Frank moaned to himself, as he wrapped both hands around his cock and absentmindedly began to stroke the beer bottle thick dick in his hand.

The growing man groaned as his overly sensitive shaft throbbed, pulsed, tightened, then blasted a full stream of fresh seed, the first shot landing right in his face. The second shot impacted the wall behind Frank, and everything else just splattered everywhere.

It took several minutes for the firehose that was his cock finally settled down, having shot out what seemed like several gallons of cum at this point.

“Fuck," Frank moaned. “Just how much more is this going to be?"

He finally climbed out of bed, all sticky from the cum from last night and a few minutes ago. He tried to wipe some of it off with some dirty clothes (he was really going to have to do laundry today) and headed for the bathroom.

As Frank walked out of his bedroom to head to the bathroom, the door to Chris' room also opened. He was several inches taller than usual as well, and looked more like a brick wall than a man now with how big and thick his muscles were, and the pretty big bulge in the towel wrapped around Chris' waist showed that he was packing a lot down there too.

But none of that was what first caught Frank's eye.

“Holy shit dude!" Frank exclaimed.

Chris blinked in confusion. “What are you talking about?"

“You… you got like... fur all over you!"

“Yeah, yeah, I know I'm hairy," the tired Chris yawned. “What made you just notice it now?"

“No, like… fur! Like on a dog or something! Look!" Frank exclaimed, grabbing Chris' arm and lifting it up.

Chris rubbed his eyes with his other hand, and looked, noticing that, indeed, his hair was hairier than usual, to the point of his entire arm being covered in a thick pelt of black hair. Even his fingernails seemed to grown longer and pointier, like the claws on a canine.

“Well shit… that's new," Chris remarked, before glancing at Frank. “But you are one to talk."

Frank glanced down at his own arms, to see that red hair was also growing all over his body as well, just a bit shorter than the black fur on Frank, with darker red spots freckled all along his arms and down the sides of his body and to his legs. But around his hands, from just below his wrist to his fingers, it looked more like scales than fur, his fingertips also having turned into claws. Lower down, his legs were also covered in the short red fur, with the scale-like skin around his ankles and feet as well.

“What the hell is happening to us now?" Frank asked, as he let go of Chris' arm. “This thing is turning us into animals now?"

“Guess we'll be leading the pack now, eh?" Chris joked.

Frank didn't really see the humor in the situation. “How the hell are we going to go to school like this? Hell, the ROTC has a training thing this weekend that we shouldn't miss. I have an exam next week! We can't show ourselves like this!"

“Calm down man," Chris said, stepping closer and resting his hands-on Frank's shoulders. “Just… chillax. It will be fine. I promise."

Frank took a deep breath. “Okay. I guess we can miss one day, right?"

They tried to call the doctor's office, which was a lot harder than it should have been. For one thing, the claws they now had on their hands made using a touchscreen cellphone nearly impossible without bending the finger into awkward angles. The other special software on the phone was also not much help: the fingerprint scanners stopped working thanks to their fingerprints now more like the paw pads of a dog, and the voice recognition software, never the best, was even worse now. Eventually they did make the call… but no one was there, so they left a message, only saying that things were going weird and they needed to talk to the doctor.

They both emailed their teachers, and Frank also emailed the commander of the college ROTC program to say that they were sick and unable to attend.

“So, now what?" Frank asked.

“I guess… just hang out?"

So they ended up sitting in the living room, playing video games wearing nothing but their overstretched underwear.

Chris nodded, occasionally glancing down at his roommate's underwear, bulging massively with his engorged cock and balls.

“So… uh…" Chris started, shuffling a bit with his own enlarged junk bothering him. “I, uh… Fuck, this is hard to say…"

“Hmmm?"

“Like… I know that you are, well… uh… I mean…" Chris stammered.

“Just say it," Frank said.

“Can we have sex?"

There was a long pause, with the repeating sounds of the video game pause menu the only sound.

“What?" Frank asked, surprised.

“The past couple of day's I've been so horny, and all my thoughts are basically about you. How much bigger and muscular you are. How sexy you are. And… fucking hell, this is stupid… I just want to, you know… have sex. With, uh… you."

“I thought you were straight."

“So did I! But, well… you know how much these pills are screwing around with us. Maybe that's part of it? I don't know. But I just…"

“Well, hey. We can always just, you know, sit here and jack off," Frank said. “We're both guys after all. Just, you know, bigger and turning into animals and stuff. It doesn't have to be gay."

Chris thought for a long moment. “Well… we are in the same boat, aren't we?"

“I won't tell anyone, promise."

The partially black furred Chris finally shrugged, and reached into his underwear, pulling out a cock that would make size queen's pause. It had to be 12 inches long, the same length as Frank's, and so thick that he only just got both of his hands around it. And it was already leaking a lot of pre cum, fueled by testicles the size of oranges.

Ever since they met and started living together, this fantasy had always played out in Frank's mind. That one day his roommate would at least want to experiment with the same gender.

He just didn't expect it to ever happen, or happen because of them turning into horny animal people.

Frank reached in to his boxers, already heavily soaked thanks to how over productive he was now, and pulled out his own massive schlong, and the two just casually began to masturbate, slowly stroking their cocks up and down.

“Fucking hell, this is weird," Chris said, even as soft moans of pleasure escaped his lips.

“Yeah, it sure is," Frank said, before experimentally reaching over and wrapping a red scaled hand around Chris' cock.

Chris let out a gasp as the warm hand grabbed his dick. Something inside him wanted to complain, to tell him to stop it and stick to his own pole. But Frank's movements up and down the fat cock made the protest on the tip of tongue evaporate. He instead leaned back, and let Frank continue to stroke his cock, from the black fur covered base right to the sensitive tip, up and down, slowly and sensually.

But no matter how slow Frank was, Chris' libido was running in overdrive.

“N-no… slow… ahhh… I'm gonna…" Chris moaned and gasped, shaking and trembling as his roommate continued to jack him off.

And soon he was shooting a massive load straight into the air, the heavy cream from his dick landing all over both of them with heavy splats, soaking the both of them in the potent seed.

Frank was not far behind, soon unleashing his own cum to further add to the mess.

“Holy… fuck…" Chris moaned, panting heavily. “That was… fuck… intense…"

“So, did you like it when another guy helped you?" Frank asked, sliding closer to Chris.

“I… it really didn't change anything, did it?" Chris said, a sense of relief coming over him. “It felt really good actually."

Frank smirked. “Well, then let's take it up a notch, eh?"

Before Chris could ask what Frank meant, the red-furred muscle beast had pushed his short muzzle over the tip of Chris' cock, taking a full eight inches in one simple movement into his mouth, past the sharp canines and fangs, and right into his throat.

Chris gasped loudly, toes curling and his claws digging into the armrest as Frank began to give a blow job to Frank, bobbing his head up and down in a steadily increasing rhythm. Frank's mouth was just as hot and wet as any woman's, and even more experienced and effective. The tongue traced up along the underside of Chris' cock before playing with the gaping cum slit, lapping up the last splotches of cum from the last orgasm and the quickly increasing flow of precum in preparation for the next.

“Ahh! Fuck, fuck, fuck, fuck!" Chris howled, one hand reaching up to grab Frank's head and help push him down onto his cock more and more. Frank was momentarily surprised, nearly gagging on the thick and long cock that was now being forced into his throat, but soon he was nearly reaching the black fur on his stomach and crotch.

Chris was bucking his hips now, driving his dick deeper and deeper into Frank's mouth in a discordant rhythm which the red furred monster's head bobs. His grunts and moans and panting told Frank that he must be getting close.

And with a final buck, ramming Frank's nose into the black fur at the base of the cock, Chris finally came with a loud howl of ecstasy.

It was like a tidal wave being forced into Frank. He didn't even get a chance to taste the hot, salty seed, as multiple loads were pumped directly down his throat and into his stomach, making it hard to breath. Frank could feel each rush of cum from the base of Chris' dick, up along the long shaft until the urethra gapped open to allow another shot was deposited into him.

Frank was finally able to pull up when Chris' hand slipped off the back of his head, panting heavily as the rest of Chris' climax splattered across his muzzle, face and chest.

But even despite nearly choking on his roommate's cock, Frank wrapped his lips around the head again, greedily drinking directly from the tap for several long minutes until finally it was reduced to a trickle.

As it ended, Frank suddenly felt his head being lifted up, and he found his muzzle pressed against the sex drunk Chris's, and soon they were sharing a deep and passionate kiss, Chris getting a chance to taste his own cum on Frank's tongue and sharp fangs.

They finally pulled away, any hesitations on the part of Chris long since buried.

“Oh, fuck," was the first thing that Chris finally was able to say in the afterglow and their kiss. “If I had known you gave head that good, I would have turned gay years ago."

Frank, wiping the last strands of cum from his face and licking it, before licking some stray strands of cum from Chris' face, gave a small chuckle. “Well nice to know that I can do that."

Their urges sated temporarily, the two transforming roommates returned to playing video games for the rest of their “sick" day. However, their sessions were constantly interrupted by bloated balls, raging libidos, and an increasingly soggy, musk and cum filled living room. Frank even let Chris use his ass a couple of times, filling up the red ass both times with dozens of pints of cum.

As the late afternoon sun streamed into the room and the rising tide of desire filled them again, Chris suddenly threw down his controller, and in a quick move straddled a surprised Frank, the round and muscular black furred ass pressing up against the red muscle beast's cock, and began grinding up and down.

“Fuck… I didn't realize you were turning not just gay, but into a slut as well," Frank smirked, grabbing Chris' virgin bottom.

“Well… shit, fair's fair, right? That, and, fuck, I'm horny," Chris whimpered, grinding Frank's hardon between his ass, and his own cock over the red coloured abs.

“Just, you know, take it slow, please?"

Frank chuckled, before using his newly acquired strength to flip Chris end for end, pressing Chris toward his feet as he bent over to begin rimming Chris.

Chris moaned loudly as the thick tongue of his roommate pressed into his tight sphincter. In return, Chris began to lick and suck on Frank's toes, eliciting a murmurs and moans of approval from Frank, muffled by the round cheeks.

But this foreplay didn't last long, and almost as soon as it started, Chris was pushed over onto all fours in the middle of the living room, and Frank, scooping up the plentiful cum all around them that hadn't soaked into carpets or fabric and used it as a makeshift lube to push one, then two, then three fingers into Chris' virgin tailhole.

Surprisingly, Chris took it really easily, without a hint of pain but lots of gasps and moans of pleasure. Was that yet another side effect of these drugs?

Satisfied, Frank removed his fingers and slathered more of the cum on his foot long, leaking dong, before grinding it in between the two round cheeks below him.

“Last chance," Frank warned, his urges growing stronger and stronger by the minute, but still holding on barely.

“Well then do it before I change my mind and I want to fuck you again instead," Chris said, panting heavily, bracing himself.

“You'll get to do that anyway later," Frank chuckled, before pulling back and pressing his tip against Chris' anal passage.

And with a wet shlorp, the first few inches of the fat cock slipped in, making both of moan in unison as Chris' ass was stretched to a degree that only a few of the most determined porn stars or bottoms had ever taken, and Frank's fat dick was squeezed into a hot, fleshy vice like grip.

Frank, grabbing Chris' muscular shoulder to steady himself, slowly pulled out until only the head of his cock was inside the tight passageway, before sliding in again and gaining a few more inches, making both of them gasp and moan in pleasure.

But soon pleasure and instinct began to take over both of them. Frank began to pick up speed and force, while Chris began to rock his hips back in time to Frank's thrust, trying to take more and more of the huge dick inside his virgin hole, until with a wet slap, the red-furred Frank had hilted his entire foot long cock inside Chris. Gasps, groans, moans, swears, and a hundred other noises and sounds came from both of them as they picked up speed as an animalistic desire and urge took over both of them.

Frank's scale covered hands now wrapped around Chris' black furred hips and used the new leverage to drive his cock deeper and faster into the tight hole. Despite his new found strength and power thanks to the experimental drugs, or maybe because of them, Chris let himself be so ruthlessly dominated, moaning louder and louder as his g-spot was hit time and time again by the head of the fat cock.

Chris was starting to violently shake, his whole body rumbling and tensing up as he felt his climax approach closer and closer. Frank was in the same boat, but all he could do was keep pumping his cock faster and faster, harder and harder into the tight ass to relieve the pressure building up at the base of his cock.

“Ahh… fuck… so… close…" Frank growled through gritted teeth. “I'm… gonna…"

That was the only warning Chris got, before Frank let out a howl of ecstasy, and the twin cum factories, working overtime for days now, shipped out yet another hot, white, sticky mess through the massive pipe buried into Chris.

The volume of cum was so much that it easily filled Chris' anal passage, and put even more pressure on his prostrate, and a moment later the black furred muscle hunk also began to cum, his largest orgasm to date. He was pumping out enough cum that two or three shots would fill up a beer can, and there seemed to be no stopping as the floor, until now only collateral damage in the previous sexual escapades, was now flooded with what seemed like gallons of spunk and seed.

Matters were not helped when Frank pulled his still ejaculating cock, sending more powerful shots of cum right onto Frank's back, and into the assorted cables and technology under the TV, resulting in the video game that was still playing on the screen suddenly disappearing, the console and TV shortening out with a small puff of smoke.

Neither cared or paid attention, as they had much more important things to worry about, such as the gradual decline in their orgasms, until eventually both fell, exhausted and moaning, onto the floor, panting and heaving.

“F-fuck," was the only thing Chris could moan, their post-sex haze settling on both like a heavy, warm blanket.

“Fuck indeed," Frank said, before turning Chris' head around so that they could share a long, deep kiss.

When they finally pulled away, still panting heavily, Frank glanced down to see that both of their cocks were still rock hard, drooling pre from their heads, even though they just came.

“What the hell? Are we becoming sex machines?" Frank moaned.

Chris only grinned, as he now rolled Frank over onto his back, and lifting up the red furred ass. “Well, should be find out?"

It was late into the night, and perhaps a dozen or more orgasms before they finally went to bed, but not before taking yet another pill and filling out their patient forms.

<><><>

Frank's body was on fire the next morning as he woke up. Everything about him burned with a fire and lust that was ten times greater than before, and the past week had been nothing but breaking through libido highs to reach new states of sex driven lust.

One thing that Frank did notice, or rather felt, was something large and thick he was laying on. He glanced over to see a long, red, scale covered tail tip on the floor, slowly sliding back and forth.

“Oh, tail," Frank remarked, without a hint of surprise. “Snake like? I guess I'm like a snake man now?"

Frank fumbled with his phone, finally managing to unlock it then turn on the selfie camera, and held it up to capture his face.

Indeed, his head looked rather snake like: a large hood like a cobra had wrapped around the back of his head and was attached to his shoulders and the rest of his body, and two large fangs poked out of the edges of his muzzle.

But he wasn't fully a snake: he still had a lot of fur all over him, along with spots along his arms, like that of a hyena.

“So, half snake, half hyena," Frank mumbled, before the phone slipped out of his hand and landed in one of the many large puddles of cum.

Part of him was concerned, freaked out. The drugs he had taken had turned him into a giant, muscular monster, a mockery of science, a hybrid of a cobra and a hyena.

But another, much bigger part of him didn't care. It was more concerned with how horny he was.

In his sleepy, delirious and lust-filled state, he simply wrapped both of his hands around his morning wood, nearly two feet long now, and furiously began to masturbate. The scales on his hands provided another layer of stimulation on his already insanely sensitive member.

Within moments of starting to masturbate, he was already shooting a load of cum from grapefruit sized balls that arched high into the air, adding another few gallons of sexual fluids to soak his bed, splattering over his six pack abs and boobs and…

Frank then looked down at his chest, even as the geyser continued between his legs.

“What the hell now?" Frank moaned, as he finally clued into the fact that his chest was now topped with a pair of breasts that wouldn't look out of place on a female model, and a rather busty one at that.

Frank reached up a cum soaked hand to cup one of his new tits. He was surprised at the weight and size, especially of the large and sensitive nipples poking out from the top. Just brushing them sent a shudder down his spine and a loud moan from his lips. Squeezing them made him gasp, and made his cock throb hard. Just tweaking them a little more after that resulted in him cumming again, even as the final remnants of his first orgasm were leaking from the tip.

This second orgasm was even more powerful, sending aftershocks through his entire body as his giant cock continued spewing semen as if he was a firehose, adding yet more to the mess that his room had turned into.

The hand that was milking and squeezing one of his shot glass sized nipples felt another trembling sensation reach through his scaly fingers, followed by something warm and wet soaking his hands. It didn't have the same texture as cum, and in fact felt creamier… milkier…

Frank glanced up just long enough to see long streams of milk gushing out of his new tits, flying across the room, splashing against the wall and computer.

“Fucking hell, I'm turning into a cow as well," Frank moaned, before the more pressing matters of his cock shooting more cum than a normal guy would have been able to in several months, if not years.

He was totally lost in the waves of lust and sex: the musk from his body and the smell of his cum only egged him on even more, as one hand kept stroking his cock and the other lifted, kneaded and squeezed his new tits, moaning, gasping, writhing in the mess his body was just constantly adding to.

Frank was so lost that he didn't hear his bedroom door open, followed by the seven plus feet of hulking, pure black wolfman.

By now Chris' transformation was complete. His eyes had turned a piercing yellow, and though he was as big as a bodybuilder on steroids, he seemed to be hunched over, unable to fully stand up right. If he wanted to, he most likely could have got down on all fours and ran like a wolf. Behind him and running from a spot just above his round bubble butt was a large, fluffy black tail which excitedly swished behind him.

Even his cock had changed overnight from the 14-inch human shaped cock he had yesterday to a nearly twenty-inch red canine cock, complete with tapered tip and fat knot at the base that was more than double in width of the largest part of his regular shaft, and two cantaloupe sized testicles in a sac that hung halfway down to his digitigrade styled legs. The red rocket on his crotch the final piece of his lupine transformation.

The one thing that hadn't changed from the previous night was the constant stream of preseed leaking from the tip, adding to the mess that Frank's room had turned into.

“Well, I smelled something different this morning," the wolf said in a deep, low voice. “I didn't think it would be from you though."

Frank, barely lucid, looked over his knockers to see the horny wolf Chris standing there.

“Well, guess you don't have to be gay after all," Frank said with a wary smile. “But, fuck… I'm so horny right now!"

“Then let me help you." Chris smirked, nearly pouncing onto the bed with Frank, making the long-suffering bed frame creak and groan in protest as the two massive hunk began to make out, hands exploring over each other's bodies as they were locked in a deep and passionate kiss. Frank's large scaly hands caressed the wolf's muscles on his arms, back and down to his ass, rubbing a thick finger between the round hills under Chris' newly formed tail.

Chris on the other hand focused mostly on his roommate's pair of boobs, lifting them, dropping them, and massaging them. But soon one hand explored lower and lower, feeling over the thick cords of muscle and fur that covered his body.

But when Chris' hand ventured below the heavy balls of the red furred hybrid that they found another surprise. Right under the melon sized testes was a new opening, wet and hot.

They both stopped their kissing in shock.

“Is that…" Frank started.

Chris turned around in bed, hefting up the red fur covered balls and looking underneath.

“Yep, it is," Chris replied, as he moved his fingers to caress the folds of Frank's vagina.

Frank let out a loud gasp, his whole body shuddering and tightening, especially around Chris' exploratory fingers.

“And here I thought I was turning gay," Chris chuckled, before pushing one of his fingers deeper.

Frank let out a hissing roar of pleasure as his pussy was fingered by Chris, at first slowly and then with a steadily growing pace.

“Oh, fuck!" Frank moaned, along with an even longer string of incomprehensible words that tried to comment on just how amazing it felt.

Then Chris bent down, letting the heavy balls land on his head as he pushed his muzzle against Frank's pussy, which caused yet another burst of cries and moans from the hyena-snake hybrid. The tree trunk thick legs squeezed Chris' head, but the wolf didn't mind as he began to run his long, rough tongue over and inside, before diving right in to eat out his roommate.

The nerves in Frank's vagina went into overdrive, turning him into a rambling, moaning, howling eight-foot beast. He clutched to his bed sheets with as much force as he could, ripping through the many times soaked cotton fabric and into the ruined mattress as Chris methodically licked, nibbled and otherwise toyed with Frank's newest addition.

It was too much stimulation, and soon Frank was cumming again, this time from both his vagina and his penis: seminal fluids gushed onto and around Chris' muzzle, while gallons of white cum splattered on the roof, and over both the snake-hyena and wolf.

But even as Frank's mind-shattering orgasm came to an end, the burning from that morning was back, focused exclusively onto his pussy.

He had no idea what exactly was effecting him. Part of him thought it was just his sex drive driven to such a high that it would take a lot more to be sated. Some part of him told him that this was an animalistic “heat," the urge to have sex, to breed…

If it was or wasn't, Frank didn't care. He needed a dick.

And luckily for him, a big one was just a few feet away.

Chris was pulling away and sitting up, panting heavily as he licked up the mess on his face. But before he knew it, Frank was rolling over and lifting up his tail to expose his rear. Before the wolf could take a moment to admire the sight, the thick legs, along with that long, prehensile tail, had wrapped around Chris' body and pulled him closer until his dick was pressed right into the crevice between Frank's bubble butt.

“Fuck. Me. Now."

A shudder went down Chris' spine at the demand, in a voice so deep and domineering that it sounded otherworldly.

But his two-foot red rocket, still leaking pre like a broken pipe, was ready and raring to go.

So Chris slid himself back just enough to position the tip of his shift against the wet folds of Frank's vagina and with a buck of his hips pushed several inches in.

Frank let out another loud howling hiss as his virginity was taken, but it wasn't pain, but pleasure, a desire that he had never felt before, which desperately needed to be sated. His eyes rolled back as his whole body tensed, shaking like a tree in a hurricane.

“Oh, fuck, yes, please, more!" were among the only words that Frank could utter among the ceaseless stream of loud moans and cries of lust.

It was not much different for Chris. The nearly feral werewolf, growling in desperate, animalistic lust, could barely restrain himself as he began driving his cock deeper and deeper into his roommate, the metal bedframe creaking and groaning as it was violently rocked back and forth. He was only pulling out a few inches at a time to give him the leverage he needed to push in further into the tight passageway, spreading Frank wider and wider. Soon the fat knot was up against the wet folds, slamming against the tight passageway, making Frank loudly cry out as the fat puppy dick smashed against his prostrate, violently stimulated his g-sport, and demanded entry into his womb, the only thing preventing it was Chris' own dick, unable to push the flaring knot past the tight pussy.

But eventually something had to give: the virgin vagina or the canine cock had to surrender to the other.

The force and power behind Chris' canine hips were the final push needed.

With a loud, wet pop, and the cry of pleasure from Frank's fanged mouth and the howl of dominance and ecstasy from Chris, the two were tied.

And with only a couple more desperate humps, the two furry men finally reached orgasm.

Chris was first, his raging boner squeezed tight by the pussy that seemed until a moment before too small to take the fat dog shaft. He was being milked for all he had, and considering the size of his balls, he had a lot. And with both Frank's muscular legs wrapped around him, and his own bulbous knot stuck deep inside Frank, he was trapped, and unable to do anything but fill up the hyena-snake. Chris had so much to give that within moments Frank's six pack abs began to distend and round out, gaining a muscle gut from the sheer amount of wolf spunk being pumped into him.

But moments after the wolf's climax was reached, Frank also reached his peak. His even bigger cock, the head just reaching the bottom of his tits, also unleashed its load. Rushing through the canyon formed between the hyena-snake's red furred breasts, the gallons of white jizz splashing into the bottom of his chin and further ensuring that Frank's bed could never be used again. His vagina also unleashed a flood of juices, mixing with Chris' cum, only the tiniest amount being able to squeezing around the bulging knot. And to top it all off, Frank's massive tits also let loose another stream of milk from both nipples, just adding another few litres of fluids to a room so soaked and drenched that they were never going to get the security deposit back for damages.

It took what felt like hours before the two over-sexed beasts finally finished their respective orgasms. Frank flopped down into the bed, smooshing his breasts into the mattress, and Chris landed on Frank's back, still tied into the hyena-snake's vagina. They were both panting, their minds awash in the sweet afterglow that was only heightened from the smell of sex, sweat and musk.

“Well, that was something, wasn't it?" Chris said, raising his head just enough to be able to make out the words.

Frank could only give a groan of exhaustion, a snake like tongue flicking out of his mouth as he tried to catch his breath.

Eventually, with a mighty pull, Chris was able to extract his knot from Frank, causing both of them to let out another moan of pleasure as their sensitive genitalia was pulled apart from each other. Much of the cream that the wolf had pumped into Frank now spilled out, the mess quickly mixing with the rest of the room.

The red monster rolled over now that he was free, which allowed the black wolf to flop forward onto Frank, his cock pressed against the bulging cum filled belly, his head resting in-between the massive jugs, not caring that he was just smearing more cum into his fur.

But their respite didn't last long. In fact, they were soon grinding against each other, their insatiable sexual appetites roaring back.

“Ready for round two?" Frank asked, as he sat up.

Chris grinned. “And three. And four. And five…"

<><><>

In the other room, Chris' cellphone finally chimed to life, ringing and ringing, but neither heard it, nor cared. After a half dozen techno style rings, the phone stopped.

“Hello boys, this is the clinic. We were trying to get a hold of you, but it turns out that the phone number you left was the wrong one.

“The experiment was to be postponed due to… certain side effects that cropped up. If you haven't already, please stop taking the pills and call us back. We will come to your place to help you. Thank you!"