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An Ill Gotten Surprise

By Cimmaron Spirit

Commission for Dcrest13

WARNING: This story contains: human to Dobermann TF, hyper cock, hyper muscles, limited muscular mobility, anal toys, excessive cum, excessive sweat, condom filling, M/solo and more. If you are not 18, or anything I just listed weirds you out and makes you question your kinks and fetishes, then you better scurry off to somewhere safer. Otherwise, enjoy!

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Derek pushed open the door to his home, a box under his arm with an address that wasn't his. He glanced behind, confident that no one had seen him snatch the non-descript package from his neighbor's porch in the Friday afternoon light. In the distance he could hear a car drive away, and a dog barking in a yard a couple blocks away.

"Like stealing candy from a baby," Derek chuckled to himself.

His neighbors, two guys: one tall and skinny, the other a moderate height but rather buff, were always ordering stuff online, and often had piles of boxes outside their door. So what did it matter that one or two disappeared here and there? They never seemed to notice: there was no security camera, and no police had come yet to talk to his parents.

After all, why would they? It turned out that his neighbors were actually to pretty kinky gay guys. It would be embarassing to say that they were ordering various sex toys online, wouldn't it?

It was the perfect crime.

Derek had already gotten things like dildos, fleshlights, pumping toys, lots of lube, harnesses, and other sexual stuff since he started his escapade of porch pirating.

And since he was 18, Derek's raging hormones were easily being sated by his neighbors' credit card and sexual fantasies.

With a smirk, the delinquent youth stepped inside and closed the door to the darkened kitchen.

Luckily for Derek, his parents were out of town for the weekend: off to see a distant relative out of state. They had left that morning before Derek went to school, and wouldn't be back until Sunday night.

A whole weekend to himself.

And he was going to have a new toy to enjoy as well!

What could possibly go wrong?

Derek rummaged into a drawer for a pair of scissors to open the box he had just "received." Finding the cutting implement, Derek slashed at the tape holding the top of the box together, reaching in to find what his lewd neighbor had bought.

Digging through the packaging, Derek finally found the contents within.

But he was surprised to see just a simple, small glass bottle filled with a clear liquid inside, alongside a smaller box with "pipette" on the side.

"What the hell is this now?" Derek said, picking up the other box and opening it. Inside was something like you would see in a hospital or a laboratory in a movie, which transfers liquid from one thing to another.

There was a note inside, which Derek also picked up.

"Place one or two drops under the tongue for best results," was typed on the page. But under it, in scrawled blue ink was "Or entire pipette for a WILD weekend!"

Derek looked between the bottle, the note, and the boxed medical device.

Then it hit him.

"Drugs? Fuck, this must be some powerful shit to last a whole weekend!" Derek grinned. "I've hit the jackpot!"

Derek put everything back into the box, before taking it to his bedroom. Once there, he set the box on his bed, and undid his belt to allow his jeans to fall to the floor, until he was standing in only his shirt and underwear, before posing in the mirror on his dresser.

He looked like almost any other 18 year old: lanky and thin, with some body hair here and there on his arms, chest and legs that was the same dark brown color as the thicker mop on his head, with a bit of scruff for a beard. There was a faint hint of muscles here and there from some swimming and sports, but he wasn't buff or anything by any means.

Someday, maybe he will become big and muscular. If he could find the motivation to do so.

For now though, the box on his bed, and the bulge in his underwear as he thought about how much fun he was going to have distracted him.

Derek looked away from the mirror and went back to the box he had just picked up. He unpacked the pipette, uncorked the bottle and slipped the tip of the medical device into the bottle. With a push of the button on the top, the pipette then swallowed all the contents of the vial into it.

"So, one or two drops... or the whole thing," Derek said, glancing back at the piece of paper that came with this.

He gave a mischievous grin, before changing the setting on the device, before sticking the pipette into his mouth and pressing down on the plunger.

There wasn't much of a taste to the liquid: maybe a bit tangy and spicy, but nothing Derek wasn't used too. It was almost disappointing. But if it was some new kind of drug, then it must have a pretty powerful effect on the user.

Once he was sure the pipette was empty, he pulled it from his mouth, and waited. He wasn't sure what he was waiting for, but it would take a few minutes before the effects would hit, Derek was sure.

"Hmmm, maybe I'll have a bit of fun while waiting," he mumbled, before reaching under his bed to grab the box of all the other "toys" he had "collected" over the past few months.

The first thing he grabbed as a moderate sized dildo: about eight inches long, and moderately thick. It wasn't the biggest one that Derek had in the box, but the other ones were a bit more of a challenge: one or both of his neighbors must have been quite the size queens considering the size of the other dildoes in the box, and the exotic styles that he had gathered for his collection.

Derek grabbed the large bottle of lube in the box, already half used since he got that about three weeks before. Derek applied a liberal amount of the slippery liquid onto the top of the dildo he set on the floor, before rubbing it up and down to make sure that the whole length of the silicone dick was ready. He pulled down the backside of his underwear, before using the leftover lube on his hole, ensuring that he was prepped and ready.

"Ohhh yeah," Derek moaned, his cock thobbing even harder as he fingered his own butt, easily slipping three of his fingers into his anal passage: the evening practice was really starting to pay off!

Once he was satisfied that he was ready, Derek straddled the fake cock, and lowered himself down.

Derek shuddered and moaned as he was spread open: while he had been using this toy quite a lot in the past few weeks, it still felt tight. Maybe in another couple of weeks, he could go up to a larger toy...

His legs went weak and he nearly fell, but Derek managed to brace himself before that happened. Still, it was an intense feeling as he lowered himself lower onto the dildo, before allowing himself to lift up a bit, before going back down, pushing more of the length into him until he felt the base and the simulated balls at the bottom of the dildo touch his bare skin.

Derek gasped and moaned as loud as he wanted as he rode the ill-gotten dildo, since there were no parents at home to hear him and find out their precious, perfect little boy was enjoying the more carnal desires. He closed his eyes as his knees lifted him up and down, up and down, the tip bumping against his sensitive g-spot, each time sending a shockwave of pleasure through his body.

He could feel himself getting closer and closer to his climax, his body tensing up and his balls tightening, his cock hard and throbbing in it's cloth prison as pre started to leak from the tip and soak the front of his underwear...

THUMP!

Derek thrust himself down one last time with a gasping moan.

RIP!

The shirt and underwear suddenly tore apart.

SPLAT!

A heavy, wet sound echoed through the room, followed by the throb of his cock, shooting thick wads of semen, seemingly going on and on and on....

Derek opened his eyes, panting heavily.

But things seemed... off.

For one thing, even though he was sitting, he could see the top of his chest at the bottom of his vision. Each inhale and exhale made a hill rise up and down off of his chest, blocking out the vision of his lower body

Next, Derek felt incredibly warm and hot all of a sudden. Sure, he had been exerting himself for a bit before riding the toy. but now he left like he was on a beach and practically melting under a bright blazing sun.

And he felt incredibly horny. Derek had never experienced such lust before, the urge to jack off, to cum, to breed. His mind was practically swimming, any thought that wasn't cumming pushed back to the far end of his mind.

"W-what the fuck?" Derek moaned, struggling to stand up. His legs felt heavy and slow, barely able to move even as he told them too.

But eventually he got standing up, the dildo he had lodged in his butt casually slipping out with a wet schlorp, landing on the ground with a heavy flomp.

Derek turned to face the mirror.

"What in the ever loving fuck?!"

He was a monster!

Derek froze in place, trying to wrap his mind around what he was seeing.

His entire body was now covered in black fur, with a bit of brown around his mouth and ears. But his mouth was now at the end of a long muzzle, and his ears were triangular and on the top of his head, pointing forward in concern and distress.

He looked like some kind of dog... a Dobermann?

But Derek wasn't just a simple canine: he was still standing on two legs like a human. While his hands had paw pads where his palms were, and claws emerging from the tip, the five digits were still identifiable as four fingers and a thumb on a human hand.

The philosophical thoughts and debates about who he was running through Derek's mind were soon quieted by the other elements of his body that troubled him. Namely the massive muscles that covered his entire body.

His shoulders were wider than the doorway to his room, and the massive arms, so large that a normal person would struggle to touch fingertips if they hugged his flexed biceps. The boulder sized pectorals that now filled his chest fought for space with his biceps and each other, constantly rubbing and bumping into each other.

Further below, his legs were as thick as trees. And not just any trees, but redwoods. The sheer power and strength in his thighs and calves would have been capable of crushing watermelons between them with little to no difficulty at all. And his ass: his ass looked huge! Even before turning around, Derek could see the rounded, muscular bubble butt, and a short black and brown tail wagging behind.

In between his oversized upper body and the wide hips and muscles below his waist was a surprisingly tiny midsection, where a row of six pack abs had filled in on his stomach, each ab the size of a brick, and just as hard and rigid. But despite the power and strength of his core, it appeared to be stuck between his butt and his chest, with both of them trying to take over his stomach to finally meet.

But it was in between those thick muscles, obscuring his abs, reaching high above the crevice in between his pecs, and reaching eye level to the enlarged Derek that really made him stand out. The thick, throbbing pink pole of a cock had to be over three feet long, and wider than a telephone pole. The last strands of pearly white seed from his first orgasm ran down the side of the veiny meat stick, pulsing and pounding with each heartbeat.

In the mirror, Derek could just see the low hanging beach ball sized testicles, which hung low enough to go past his knees. They were constantly churning and gurgling though, the noise so loud that it drowned out the muscular Dobermann's breathing.

"What the fuck?" Derek moaned, watching as the fat mushroom tip of his manhood continued flexing and throbbing, thick globs of preseed constantly leaking out of the tip in a never ending flow.

He cautiously reached a beefy hand forward to feel the thick shaft, but even just the gentlest touch made his oversensitive dick race signals through his nerves and into his head, resulting in the oversized genitals throb and shoot out a gallon of semen, splattering over the floor, the box of toys, and his computer desk.

It felt so good...

Before Derek could think, his other hand reached up to grab the other side, and soon he was stroking and rubbing his giant manhood, making his legs grow weak and tremble despite their size and power.

Derek could feel his balls heave up, and his cock pulse, before a tidal wave of potent sperm gushed out from his cock, and soaked his bed room in his manly essence.

The temperature of the room seemed to grow several degrees in a second. His canine senses were overwhelmed with the scent of his sexual fluids and, the neverending sweat glistening his body, which only made him that much hornier...

"Oh no," the transformed sex beast said, in a moment realizing what was happening.

Even though he was incredibly turned on, the horniest that he had ever been in his young life, jacking off would only make him hornier. Then the smell of his cum and sweat would only make him want to cum again...

A vicious cycle that could very quickly get out of hand.

"I... I... I can't do it," Derek moaned, the one voice of sanity in a mind that was now telling him to give in to his pleasure, to enjoy the powerful and virile body that he had stumbled upon.

But if he did, what kind of mess would he make?

What would his parent's think?

Derek knew very well that his mom and dad thought of him as a golden child, perfect in almost every way, despite his history of bullying at school and stealing from the neighbors. Any rumors of his malfeasance broached to his parents was quashed with a "Derek would never do that!" from his mom, aghast that anyone would even suggest it! His dad would assume that he was simply being framed by other, less talented students or spiteful adults angry at their happy family life.

Derek couldn't let his parent's know that it was all a myth, one that he had fostered for so many years to keep them happy.

He had to solve this, and fast.

Derek lumbered to the hallway, his fat, drooling cock leading the way, to the nearest thermostat. He cranked the dial as low as it could go, to 45 degrees. The air conditioning quickly cut in, blasting arctic levels of air into this part of the house. While his body could feel the chill, the sweating barely seemed to be affected.

"It will just take time," Derek panted to himself.

Next he went to the bathroom, each footstep making the whole house shake and the huge fat cock bounce and throb, leaking viscous clear preseed all over the place. Derek did his best to avoid jostling his leaking schlong and churning balls, but every step of his mammoth legs bumped against both, sending ripples through his body.

Once Derek reached the bathroom, he grabbed all the towels from the closet, grabbing them to clean up the mess he had already made of his room, while a couple he wrapped around his shoulders and draped over his head to try to stop the never ending stream of perspiration coming from his body.

By the time he got back to his room though, the towels he wrapped around himself to try to mitigate his sweaty body were already soaked and more or less useless.

"That was useless," Derek panted, throwing both of the sopping wet towels toward his laundry bin, where it landed with a splat!

He went over the rest of his room, trying to clean up the cum that he had blasted over everything. But his thick figures, and the limited motion provided by his bulging biceps, shoulders and pecs, and the fat, leaking cock that was constantly in his way, and the heavy balls that he was practically dragging on the floor as he was cleaning up, made it much, much harder than it should have been.

After going through three towels, each just as soaked as the two sweat drenched ones, he was mostly content with the clean up job. However, it would take professional steam cleaners to really get the cum stains out of the curtains and carpet.

"Okay... that's dealt with," Derek said to himself, sitting on his bubble butt, leaning back against his bed. "But now what do I do?"

His computer was out. Even if he could use the keyboard and mouse, which he knew his fingers were too big to use effectively, the swivel chair wouldn't be able to hold the hundreds of pounds of muscle and doberman.

Derek sure couldn't leave the house for the weekend. He was a monster and a freak, someone who would be arrested for public indecency or captured by scientists to be studied.

Maybe he could go into the backyard: the house did have an in-ground swimming pool... no, but his sweat and cum would clog it up, and he would never be able to clean it himself.

The only people who maybe could help him were his horny neighbors, the ones who he had been stealing from. They must have been aware of what they were getting. So maybe they could help him.

But then he'd be found out, and he'd be in very, very deep trouble.

"Fuck."

But even just sitting there, doing nothing, as the temperature of his room was as low as it could be artificially lowered to, he was still dripping in sweat, as if he had just been working out in the sun all day.

But the bigger concern was right in front of him. Derek glanced at the throbbing pink pillar that blocked out most of his vision, watching it throb and pulse with each beat of his heart, and at the constant stream of precum that was leaking down. His cum factories were also constantly churning, his nuts swimming in an ocean of virile white spooge, just waiting to get out.

"Fuck, I feel so full..." Derek said, as he reached over to feel his balls. Just touching them made them wobble, the sac holding who knew how much cum, even though he had just hit orgasm not twenty minutes ago.

"God damn... how much cum am I making?" Derek asked no one in particular. And something told him that his balls were growing larger. He could barely tell, but they seemed fuller, rounder...

It must have been his imagination.

Derek cursed his curiosity and his stealing ways that left him in this predicament of being so big, so horny, so lewd that he had basically trapped himself in the house all weekend...

The dobie banged his head against his bed.

And the box that the vial came in spilled over him, dumping all the styrofoam peanuts over him. He was so sweaty that most of them stuck to his fur.

Something else landed on Derek's muzzle though. It was flat and square, about the size of a small dessert plate.

Curious, Derek reached up to grab at what it was. Or at least as far as he could, his muscular frame getting in the way.

"Fucking muscles," Derek muttered, before twisting his head and muzzle to get the thing off his nose.

It fell off his muzzle and landed on the floor beside him, his hands not fast enough to grab it before it fell.

Derek finally looked down.

"Magnum XXXXL Condom. For the BIGGEST Men!"

Derek picked up the box to see that there were even more of these oversized condoms packed in. Clearly his neighbors were expecting this, and had ordered something to help contain it.

The muscular doberman struggled with the package before finally tearing into it, allowing a large latex ring to slip out.

It was only maybe half the diameter of Derek's gargantuan dick though. Even Extra-Extra-Extra-Extra-Large couldn't fit his pole!

While he knew that condoms could stretch, they couldn't stretch that much... could it?

Well, it was either try this, or struggle through the whole weekend leaking precum everywhere. If he could stop the flow of his preseminal fluids, he could handle being sweaty and stuff for the rest of the weekend.

So Derek pushed the latex tip around the fat head of his cock, and started rolling it down. He winced at the tightness, but his dong was being contained by the condom.

The canine meathead finally rolled the condom down about a foot over his manhood, when he finally ran out of extra, still leaving over two thirds of his schlong uncovered.

But it was snuggly attached, so it wouldn't be going anywhere. Derek hoped.

Already the reservoir tip had filled out with pre, and the lubed latex was starting to bloat larger by the minute.

"Okay, so it's not going to last all weekend," Derek panted, looking over and collecting the other condoms that had been in the box. Eleven more in total.

"Hopefully this will be enough."

The gurgle from his balls didn't give a promising answer.

It was going to be a long weekend...

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Sunday morning. The sunlight was streaming through the window, hitting Derek squarely on the face, making the young man groan and try to roll over.

Only for his biceps and shoulders to get in the way, preventing him from rolling over.

The muscular doberman sighed.

He was still an over muscled, over hung, dog-man freak.

Derek finally sat up, the bed creaking, cracking, crunching as he did so. The springs of the mattress had been bent all out of shape by now, and the box spring underneath was barely being held together: the metal frame had been bent and warped from the excessive hundreds of pounds laying on it.

Even more concerning was just how wet it was. Derek's body simply never stopped sweating the whole weekend, and his room was now so humid, dank, and musty that it would be uninhabitable otherwise.

Derek had spent the whole weekend in his room, except when he tried to shower off the sweat (which only lasted about three minutes, before he was practically soaking in his own juices again), or if he tried to find something to eat. There wasn't a frozen pizza or dinner in any of the freezers by now, since they were about all he could cook with his giant body getting in the way all the time. He sure couldn't order anything: he didn't have a bank or credit card to do so. And even if he wanted to order Chinese or burgers or something else, how the hell could he even go to the door to accept the delivery and pay for it?

He was as careful as he could when in the kitchen or bathroom, doing his best to clean up after himself. But every clean towel in the house he could get, including those in his parent's ensuite bathroom, were now in the basement next to the washing machine, alongside other clothes from his closet he had to resort to in order to clean up his sweaty muscles and body.

"Ah, fuck," Derek groaned, knowing that he would have to wash a lot of clothes before his parents came home that evening. While he had a decent start on the towels he started with, most of them that he washed had to be used again to try to slow down the rivulets of perspiration that cascaded from his body all the time.

On the bright side, the condoms did their job very well. The super stretchy latex had been perfect in holding all of the preseed that was constantly oozing from his cock. The tight seal ensured that next to nothing oozed out when it was on his dick, and by tying a knot on the end, he was able to keep it contained after they were so full that they couldn't hold anymore.

But now, Sunday morning, the second to last one was full. The giant, beanbag sized latex balloon of clear precum attached to his dick, the result of last night's horny thoughts and lewd dreams.

"Well, guess I better deal with you," Derek sighed, as he slid the end of the rubber off his cock, and quickly tied the end close in order to keep it from spilling everywhere.

Then, just as quickly as he took the last one off, he ripped open the last XXXXL condom and slipped it as far as it could go on his cock.

Only a couple gallons of his potent pre missed.

"Okay... that's dealt with," Derek said, as he rolled the tied up condom of preseed next to the pile of the other ten that filled half of his room. He had no idea how much he leaked all weekend, but the pool in the backyard would have struggled to hold it all, that's for certain.

Which lead to the biggest, and most pressing concern.

His bloated, overfilled, stretched, heavy and loaded balls.

Derek knew that he couldn't jack off. If he did, he would have either made a huge mess that he couldn't clean up, or fill up the limited supply of giant condoms that came in the box, and then he would leak pre all over the place.

It turned out to have been a terrible mistake.

The thought that his nuts were growing that he dismissed on Friday turned out to be true. By Friday night, the balls were below his knees. By Saturday afternoon, he was dragging them on the ground behind him to get anywhere.

Now, Sunday morning, they were nearly the size the rest of his body was. They were so full and heavy that he didn't even try to pull them up onto his bed last night, instead letting them sit and gurgle on the floor.

But now... now he could barely walk at all. He was trapped by his boulder balls in his room.

"Fuck... How do I get rid of you?" he asked his inflated testes.

There was a long, loud gurgling, as they expanded even larger.

"Okay... okay... plan..." Derek said, as he stood up, climbing over his mountainous sac and got to the door. "It's early enough in the morning that I can get out of here, down stairs, to the sliding door in the backyard, across the lawn to the trees behind the pool, and just jack off into the forest, and dump all my spunk there. No one will ever see or know. If they smell it, then they can blame a factory or something. Okay... okay... yeah... that should work."

Derek took a deep breath, and marched forward, pulling what felt like a tanker truck worth of semen behind him, the three foot long pole of cock, topped by the latex condom at the tip, the first to leave.

He was already too wide for the door with his shoulders. Even somehow managing to wiggle through, his nuts were on the other side of the door.

"Fuck!" Derek moaned, realizing that those sloshing orbs were not going to easily fit through the narrow opening.

The jacked doberman decided that, if he was going to have giant sweaty muscles, then he might as well use them.

With a lot of brute force, he finally managed to wiggle one half of his balls through the door, fighting both his limited mobility and the sweatiness of his body to get that far. But all that manhandling and tugging and pulling only made him hornier, which made it just that much harder to deal with.

"Ohhh... fuuuck..." Derek moaned, biting his lip as he did his best to suppress the increasingly urgent need to cum. Just have to get the other ball out, down the stairs, to the back door...

When he felt a lull in the story that was his libido, Derek then began to get his second ball out of his room, and into the narrow hallway. Surprisingly, he did fairly well, getting the bathtub sized nut part way out the door of his room with only a few tugs and pulls.

But then he lost his balance.

Whether it was his top heavy chest at the wrong angle, or his feet slipping on the sweat covered floor, Derek fell down. While it did manage to pull his other half of his nutsack free from the prison of his room, it started a chain reaction that Derek had so desperately tried to avoid.

His titanic cock, already gushing out precum at a rate that it could fill the novelty condoms in a few hours, began to tremble and throb even harder.

"Oh no..." Derek moaned, trying to get to his feet to hurry down the narrow hallway to the stairs, and to the living room, then the kitchen, then the outdoors...

But the effort to drag his churning nuts down the carpeted hallway, squeezed between the walls that made the passageway too narrow, only made things worse.

By the time Derek had reached the stairs, he knew he was on the verge of orgasm.

"Just... a bit... further..." Derek gasped.

THUMP!

He went down a step, making his whole body jostle.

THUMP!

Derek was whimpering now as the condom started filling up faster, and this time with a more thick and white fluid.

THUMP!

Now his balls, so heavy and bloated, started moving at their own pace.

THUMP! THUMP! THUMP!

Soon Derek was practically running to avoid being crushed by his gargantuan nuts.

THUMP!

KABLOOSH!

The orgasm struck with such force and ferocity that Derek didn't even have time to comprehend what was happening.

The first shot of cum would have filled both bathtubs in the house at once.

The second would have easily topped off a large hot tub.

The third one would have flooded the basement up to someone's knees.

The condom couldn't take anymore, and with a pop and tear that was drowned out by the tidal wave of white it failed to contain, it burst.

With the dam broken, soon Derek was left spraying his potent cum from the firehose of a cock. The living room was quickly flooded, the couches, TV, chairs and bookshelves washed away, as paint was stripped from the walls, replaced with white spunk.

The kitchen was next door, and it was quickly awash in sperm. While the fridge and other appliances were rather sturdy and didn't move, the cupboard doors were torn from their hinges, and the dishes, pots, pans, plastic and much more were washed out and coated in Derek's uber-manly essence.

The sliding doors that Derek had hoped to reach were now the only thing holding the wave of cum from pouring into the backyard and painting the grass creamy white.

And the door leading to the basement, left ajar by Derek before, was soon blown wide open by the flood. The thick spunk cascaded down the stairs toward where all the clothes that he had soiled with his sweaty body before had been left in heaping, smelly piles, now they were joined with hundreds of gallons of cum: the towels were of no use in cleaning up this mess.

And still Derek came and came, his mind blank from the sure power and pleasure and lust rushing through his body. All thoughts about trying to stop this, to try to at least get back to the forest and get some of his excessive semen out there, was washed away in a wave of mind bending lust and sex.

And eventually it all went black as he passed out from the sheer pleasure.

It was a while later when the eighteen year old, naked as the day he was born, woke up from his gigantic ograsm induced coma.

The first thing he noticed was something that he didn't see. The fat log of a cock that had spewed all this semen out was no longer in his vision. He glanced down, to see if maybe, somehow, it had gone soft.

But the pecs he could barely look over, and the thighs and calves, and all the other muscles he had was gone. The black and brown fur had also vanished: only the whitish-pink skin of his normal human body was there.

"H-holy shit... I'm back!" Derek exclaimed, sitting up and looking at his fingers, the clawed tips no longer there. "I'm not a monster anymore!"

But the joy at no longer looking like a mountain of muscle quickly faded as he looked at the mess the house was in.

"Oh fuck..." Derek moaned, realizing all the cleaning he would have to do before...

There was a screech of brakes in the driveway, something that Derek knew all to well.

"Oh... FUCK!"