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"Just about to the proper concentration. A few more drops and it should be right where I want it," Triac said as he carefully measured out miniscule amounts of a solution he had been working with, "Just a little more and then you'll be ready for a test."

The fox was completely absorbed in his work. He mopped his forehead with the sleeve of his lab coat, adjusted his glasses, then carried on, finding it almost impossible to notice anything else that was around him. Including the paw-falls just outside in the corridor. The door behind him was shoved open as a tall, rail-thin stoat entered, staring at his clipboard.

"Triac, how are you coming with those samples I asked for?" the other scientist asked.

The instant the door was pushed open, the rotund vulpine began hastily moving the collection of vials and beakers he had been working with off the counter into a cabinet underneath. He was sure to be caught now. Triac had been working on a side project of his own making, and on company time too. At the very least, that would earn him a significant amount of stink-eye from his supervisor. The stoat looked up from his clipboard as he detected the panicked movements in his periphery. He raised an eyebrow and lowered the logistics forms he had been looking over and waited for the fox to respond. There would be stink-eye, that much was certain.

"Oh! Hi boss! I... I was just about finished with them! I was just waiting for them to finish coming up to temp in the warmer!" Triac said quickly, darting over to the piece of equipment in question.

"Working on your little pet project again?" the stoat asked, keeping the displeasure in his voice at a restrained level.

The fox winced, feeling his supervisor's stare on him. It was unpleasant, and he had to face the music now.

"Yeah... I know I shouldn't be on the clock but... everything else was already done and I was just killing time until the samples were ready." Triac said.

"Just... save it. I know you wouldn't let it seriously interfere with your actual work... but... at least try harder to keep from being caught would you? I mean, if you can't keep your personal work off company time and property, do better at not getting noticed. I like you, Triac. I don't want to have to put you on report," the stoat said with a sigh, "And I would hope all the chemicals you're using have been properly accounted for as allocated for personal use? No funny business trying to get the company to pay for your little experiments?"

"Of course! I would never do anything like that! I've got everything properly documented! I can even show you my notes if you need to see them!" the fox answered quickly, fearful that he might get into serious trouble, rather than just a slap on the wrist that it sounded like he might get away with this time.

"No... no, I don't need to see them. You can fill me in when you've finished your experiment phase and have a conclusion. For now... just... put it away, and bring those samples up to the third floor. I'm ready to start examining them. You know how important the work we're doing here is. I need your head in the game." the stoat said.

"Yes, sir. I will, sir." Triac said.

The supervising scientist nodded, then turned to leave. As soon as he was gone, the fox sighed and his shoulders slouched. He had let himself get too carried away. It was dangerous working on two very different projects at once. He could easily have been written up--or even fired--for what he had been caught doing. Thankfully, his boss was more understanding than most.

Once the samples were retrieved from the warmer, the fox set them aside to take them upstairs. They would be just fine for a few moments while he put his own materials away properly. The fox began retrieving them from the cabinet, setting them out in preparation for safe storage. He muttered to himself as he did so, disappointed that he had been so careless. As he went about preparing to put his work on hold the correct way, the door opened again and quite suddenly. A raccoon burst in, rather excited about something, what it was the fox was too distracted to notice.

"I did it! I got the result I was after! It took a few days to finally kick in, but look!" the raccoon opened his mouth and pointed to the brightly green illumination coming from the inside of his maw, "It's glowing!"

Triac yelped in surprise, startled badly by the sudden bursting in. The large beaker of slightly thick, opaque, pink ooze slipped out of his grasp and tipped over, pouring down his front. It was terribly cold to the touch as it soaked his lab coat, even seeping through to dampen his fur quite thoroughly.

"Dammit, Rocky!" the fox shouted as he tried to mop up the large, pink stain spreading down his generous belly.

As he turned around, it gave the ring-tailed fellow a view of the mess he had caused. Immediately, the newly arrived scientist's expression drooped and he hunched forward slightly, feeling bad for his minor crime.

"I'm sorry, T. I didn't know you'd be working on that. I figured you'd be in the corner reading a book or passed out from boredom waiting on the samples in the warmer. I figured you'd be excited to hear that I managed to make some headway finally. I didn't mean to make you spill." Rocky said, lifting a paw to brush his bangs out of his eyes.

They were mostly dark grey, save for the bright neon green highlights, as were the thin lines that surrounded his dark 'mask'. They matched the brilliantly verdant, narrow stripes around his arms just above the elbows, and around his legs just below the knees, as well as between the lighter and darker grey rings of his tail. Once he could see what his sudden arrival had caused, he offered to help clean up.

"Just... stay back. I don't want this getting on you too. I don't know what it does at this concentration." Triac grumbled as he began working to clean more than just himself, "Look at this, all my work. I'm going to have to make a new batch. And that means I need to get a new supply of the materials that went into it. Shipment won't even leave the warehouse for at least a week after I put the requisition in."

"Seriously, I'm really sorry. Is there anything I can do to make up for it?" Rocky asked, genuinely wanting to make things right.

"Doubt it. It's not like I wanna mess up your project. Especially since you've had a breakthrough. It'll be fine. I'll just have to wait a while longer. I shouldn't be doing this on company time anyway." the fox said.

"I know how important this was to you. You've been trying to figure out how to make that serum work for months. I just wish you felt more comfortable with yourself. Maybe then you wouldn't feel the need to do something so drastic." the raccoon offered as politely as he could, fetching his friend a small stack of paper towels to clean with.

"We can't all be happy with our body types. I'm glad you are with yours. I just... I want my old clothes to fit better. You know? Not have to worry about knocking over test tubes and stuff with my gut." Triac sighed, looking down at his very pronounced middle.

"Look, I saw the boss leave before I came in. He asked for the samples, yeah? Let me clean this stuff up while you go run them upstairs. I won't get any of it on me, scout's honor!" Rocky said, even lifting a paw to make the gesture that went along with the wording of his promise.

"Rocky, you were never in the scouts." the fox replied.

"No, but it doesn't make it any less important when I say it! Go on, I got this! The boss is waiting!" the other portly fellow leaned in, trying to gently nudge his friend away from the mess.

"Fine. Just... make sure you use gloves." Triac said.

The mess was left in the hands of the raccoon to tend to while the fox changed lab coats. He couldn't very well go upstairs to deliver the samples with evidence of an accident in the lab all over him. He pulled the white cloth garment off and wadded it up to toss into the bin. The industrial cleaning company that handled their dirty laundry would be by in a few hours to collect the bins and haul them away for sterilizing. As the fox disrobbed, he exposed his chest. There, in the center, was a symbol matching his namesake.

It was a single, long, vertical line broken in the middle by two horizontal lines with an empty space in between. Filling that space were to equilateral triangles, connecting the horizontal lines. The one on the right pointed up, while the one on the left pointed down. Another line angled down and away from beneath the right triangle, before turning perfectly horizontal. It was a triac, 'triode for alternating current', representing an electrical component of the same name, a name the fox shared.

Before Rocky could make a comment about how 'electrifying' the fox's company was, or how he could 'light up a room', the half-naked scientist grabbed a new coat, slipped his credentials into the chest pocket, collected the samples his boss wanted, and made his exit. He would need to figure out a better way to go about his experimentation rather than try to do any of it on company hours. The trip upstairs would give him a little time to figure that out. His job was too important to risk. Landing a research position at the biotech firm had been unbelievable good fortune, for him and for Rocky. There was no sense in putting it in jeopardy, especially after that little accident of his.

The boss would be satisfied that he listened, at the very least.

---

"Weight remains stable while waistline measurement continues to decrease. At this time I cannot ascertain what effect has been triggered by my accidental exposure to mixture number 3-07. Concentration levels were beyond experimental parameters and exposure was direct skin contact, reduced by clothing and fur barriers. Observation continues to provide data points. Will begin evaluation on overall effects when there is a large enough data set to determine a trend." Triac said into his voice recorder.

He would listen to it later and put it down into proper notes when he had free time. For now, he was mildly concerned. It had been a week since Rocky had startled him into spilling his serum down his front. He hadn't even attempted to put together a list of materials to requisition. He only started to notice that he was showing signs of exposure when he had to cinch his belt one notch tighter. That had been a curious thing indeed. He had been at 120 centimeters along his waist. He had dropped nearly five over the last week. And yet his weight had not changed. Where was the mass going?

The fox dressed, left his home, and headed to work, still puzzled by the mystery surrounding him. And yet he found it difficult to focus on it as much as he might like. There was something else pressing in on his mind. Triac squirmed in his seat at the counter as he prepared another round of samples for the boss. He had been feeling more anxious lately, not nervous or worried, but certainly pent up. It had gotten to the point where he found peace and stillness evaded him in spite of his best efforts. And while the idea of his waist shrinking was of some comfort, he could swear he had noticed his scrotum slowly growing. It had not occurred to him until the night before, so he had no data to prove it was happening. He shrugged it off as some form of minor inflammation, or perhaps just a bad case of 'blue balls'.

"Hey T, how's it going? Ordered your stuff for another formulation yet?" Rocky asked as he approached.

Ever since the spill, the raccoon had been far more careful to gently announce his presence before entering the lab. It usually came in the form of a whistle or a louder than normal gait. It was unnecessary now that the fox wasn't working on his side project. But the effort was appreciated.

"No. I've kind of put it on hold for the time being. I need to make sure of what's happening to me first." Triac said.

"What's happening to you? I don't understand." Rocky replied.

"I was exposed to the serum when I spilled it on myself. I don't know how much of it actually entered my bloodstream, but apparently it doesn't have to be drunk to be effective. Skin absorption is enough. And I can't accurately guess how much was absorbed by my lab coat or my fur before it reached my skin." the fox explained, sighing quietly as he gently brushed a soaked cotton swab over a petri dish.

"Well how do you know it's having -any- effect? It's not like you've suddenly turned into a supermodel!" the raccoon grinned, gently nudging his friend with an elbow.

He took great care to not hit the vulpine's arm, having well learned his lesson from the week prior. It was another unnecessary gesture, given that the dish was laying flat on the counter and there was no real damage that could be done if Triac was disturbed as badly. It was still appreciated. Though he was being careful, Rocky's attempt at humor was found less than entertaining.

"I've lost five centimeters off my waist. Had to fasten the belt tighter then usual. I'm getting skinnier. And it happened over the course of a week. I haven't changed any of my habits. I'm not exercising more. My diet is the same. It's got to be the serum." the orange fellow said.

"Oh so you've lost weight huh? That's great!" Rocky replied, trying his best to be supportive.

"Lost is right. I'm not getting any lighter, but I'm getting skinnier. I've lost the weight meaning it's still there, but I don't know where it's gone." Triac sighed, still frustrated, on more than just the one level.

"Huh, that is pretty weird," Rocky said, grasping for an explanation, "Maybe you're just putting on muscle. It's more dense than fat. Would explain it."

"Maybe. I haven't really been able to focus on it too much lately. I've been pretty distracted the last couple of days." the fox put the petri dish down, put a lid on it, labeled it, then added it to the pile he had already done.

"Well, if you're having trouble focusing, maybe I can help. I'll bet I can get you to relax a bit." the raccoon waggled his eyebrows, hoping it might lead to something he had been wanting for a while.

It was an alluring idea. And the samples were all prepared for the incubator. Triac turned and looked at Rocky, contemplating the notion. Their lunch hour was coming up. They could easily sneak off for a little while.

"You know what? Sure. I'm game. I could use a little down time." the fox said as he climbed to his paws.

The two chubby fellows left the lab and made their way down the hall. They chatted about various work-related matters, logistics, experiment results, and even Rocky's own side project. The interior of his mouth--the roof, inside of his cheeks, and even his tongue--had all gained the green glow he wanted, but only when he was in a good mood it turned out. But that was only part of his work. So his experimentation continued under the assumption that if he maintained the concentration he was at, it would eventually filter through elsewhere.

The raccoon wanted to make his green highlights glow in the dark without dying his fur. And not just his bangs, but everywhere he was green, the heart shape on his chest, the rings on his arms and legs, even his tail. Including what was in his pants. That much was of some greater interest to him, thinking the notion to be quite novel and amusing.

It took a little while before they were sure they were far enough away from other employees. There was also the care taken to be out of sight of the security cameras. What they had in mind required a good deal of privacy. After all, it wasn't just side projects on company time that was frowned upon. When the two were sure they were well out of sight, they slipped into a supply closet.

In a flurry of activity, the fox began unfastening his belt and opening his pants. Rocky assisted, dropping down onto his knees as he fumbled away. In a matter of moments, the vulpine was free and in the open air. That freedom was short-lived. A pair of lips quickly surrounded Triac's length, already slightly damp from the anticipation of their little quickie. The raccoon slurped quietly at the still mostly flaccid spire, bringing it to attention in what had to be record time. It surprise the striped fellow. He withdrew just long enough to add a little commentary. "Looks like someone's been needing attention for a while. When's the last time we did this? Three weeks ago?" Rocky asked.

"Something like that. Mmm, just... just go on already. I'm already pretty close." Triac replied.

"I'll bet you are. Three weeks since you last got a muzzle on you. I'm betting you've not done anything to handle things on your own that whole time. For shame. Self care is important." the raccoon said with a smirk, then leaned back in to wrap his mouth around his friend.

A moan was the only answer the fox could provide. He rest a paw against the back of Rocky's head, the other against one of the shelves for support. He grunted as he began rocking his hips forward, feeling the familiar, inviting sensation of his friend's tongue against his throbbing shaft. He drooled readily into the raccoon's mouth, huffing and panting as he pressed closer and closer to climax. Two paws squeezed against the weighty orbs waiting to be emptied, using that same kneading and massaging technique Rocky had used so many times before. It was quite the lovely addition. And this time, it was enough to put the fox over the top.

Triac threw his head back and stifled a howl. He mashed hard on the back of his friend's head, pushing his shaft all the way to the back of Rocky's throat as the rest of him went rigid, completely stiff as a board. The aggressive act was not uncommon, especially since the raccoon rather liked it when he was made to engulf him so fully. The head of the vulpine's rod pressed into the other chubby fellow's gullet, dumping its sticky blast directly down his throat.

Pump after pump saw more and more of the thick ooze drain from the fox. It was remarkable how much he had to give, lasting longer than the precious few moments it usually did. When it felt like he was nearing the end, Triac was claimed by a need to work his hips even more, to hump, to carry on even though he had just hit his peak. His shaft continued to throb, demanding he proceed, so he did. He couldn't deny what his body was screaming for him to do. Rocky held on for dear life as his friend refused to stop after that first blast. Then, impossibly, a second swelling of sensation followed. The vulpine's jaws parted and he bit down on one of his paws as he was taken by another orgasm. This time the flood was heartier, thicker, even greater than the first. He couldn't stop. It brought about such profound relief. The pressure and ache he had been struggling with all week was finally dying down.

Slowly, the raccoon began to feel himself strain. One of his paws dropped from appreciating his friend's sac to feeling over his own pudgy waistline. His gut began to swell and distend to the point that his shirt began to ride up and expose that black furred tummy. He had never known Triac to be able to do such a thing. It was astonishing! Rocky simply had to see how far this went, so he kept his nose mashed against the fox's groin, gulping as quickly as he could, ballooning his belly more and more. It was difficult, holding to such a state without surfacing for air, but he managed in spite of it.

A few moments and several generous spurts later, the two were panting. Triac was leaning against the shelves. Rocky was up against the door, kneading at his swollen, firm stomach. He had gained quite a lot from the fox's surprisingly productive orgasm. It left him to wonder why on Earth this had not been part of their fun during prior sessions. Had he known it was a possibility, he'd have asked for it, maybe even expected it.

Rocky was far too full to eat lunch at this point, and that delighted him beyond reason. The fact that his shirt refused to come even halfway down his middle further tickled him until giddy. It was as if someone had taught him a secret trick in his favorite video game. He had something entirely new to explore, something that would give him endless delight. A very satisfied sigh escaped the raccoon, his mouth hanging open, his tongue lolling from his jaws, and the interior of his maw glowing brightly. He was indeed feeling -very- happy.

"Damn, dude! What the hell was that and how can I get that again!?" Rocky said more loudly than was wise.

"Shhh!" Triac hissed, "Keep it down! We don't wanna get caught! And I don't know! I've never had that happen before!"

"Well holy shit, if that's what you're like when you're pent up, then maybe I should keep my hands off you for a few weeks and save it up until I can get another good blast like that!" the raccoon grinned and chuckled, slowly standing up.

Rocky stumbled a little initially, not used to the added weight, and there was a fairly decent amount of it. He rubbed over the round, sloshing dome, unbelievably satisfied in a way he had not thought possible. He had been serious about wanting to get another round like that in the future.

"I did notice that I was feeling... well... bigger than usual yesterday. Did you notice anything like that down there?" the fox asked.

"Yeah, you were bigger. Not like make you internet famous in all the weird websites, but enough that I had to use two paws instead of one." the raccoon replied.

"So it wasn't just my imagination," Triac mused, then furrowed his brow, "Wait... what websites have you been going to where that's a thing?"

"Oh yeah. There's a site out there for just about everything. And there are plenty that enjoy folks who are ridiculously equipped. Some even get implants, usually porn stars, but that can do serious damage." Rocky explained.

"Why not just manipulate the photo? It's easier and safer. Probably costs a lot less." the fox frowned.

"Some people can tell the difference and complain. Anyway, I don't think you'll be doing any photo shoots anytime soon. Feels like you're back to normal downstairs. That's a shame if you ask me. I liked my fox being bigger." the raccoon said, giving the vulpine a gentle pat between the thighs, then let his paw linger to massage in appreciation, even affection.

He had been feeling him up while they chatted. Partly it was to collect more data like any good scientist would when presented with a mystery. But it was mainly just an excuse to fondle the vulpine. He leaned against Triac, even resting his head on the fox's shoulder, just enjoying the closeness in the aftermath of their fun.

"It's gotta be a side effect of the serum somehow. It's making me more productive. I have to add that to my notes and keep an eye out for any other possible unintended consequences." Triac said, thinking aloud.

He began tucking himself back into his underwear, then pulled his pants back up to make himself decent again. He looked down at the bloated raccoon still relishing his sudden expansion, troubled by the matter, but at least comforted by how much his friend was enjoying it. Rocky was terribly sweet to want to help, and it just so happened that the raccoon got something out of it that was both surprising and even more gratifying.

"Does that mean I found your missing weight?" Rocky joked.

---

The fox decided it would be best to weigh himself when he got home that evening. He had felt better after his most recent 'friends with benefits meeting' as he liked to think of them. The need to squirm was gone. He could sit still again and focus, but it didn't last long before he started to feel it slowly tickle at the back of his mind again. What he found when he measured himself was a marked decline. Maybe there was something to Rocky's joke, that it was somehow tied to the serum.

Triac's thinning continued the next few days. Another few centimeters vanished, but his weight loss had plateaued again. It was troubling. And then there was Rocky. The swelling he had gotten was enjoyed by the raccoon, but it lingered for quite some time. For the rest of that first day, the tubby fellow fawned over his gut, letting it hang exposed, actually proud of it. The next day, he had shrunk some, but not completely back to his usual size. His shirt had managed to cover more of him, but not the whole of his stomach. When asked, the now noticeably chubbier Rocky said he had indeed put on some weight, but he felt rather comfortable with it. At least he was happy about the addition.

After that first session, Triac decided to begin measuring his scrotum to see if any changes recurred, and if so, how great a change there would be. It only took a single day for him to notice, and the change was fairly significant. Just as Rocky had described it, the increase in volume had not been enough to put him on par with the lengths certain adult film and magazine stars went to in order to impress and stimulate their audience. Triac had gotten curious and actually researched the matter, finding there was such a thing as testicular implants. And while he didn't measure up to them, he was certainly decidedly above average when 'fully loaded' as he came to think of it.

There was a point where the growth stopped and he didn't feel any more pent up than he had the previous day. Perhaps there was only so much he could 'offload' at any one time, a capacity to his production. Just what was going into his seed now that there was so much more of it? Maybe that would provide the answers to the mystery; was it tied to his weight loss, was it a side effect of the serum, what effect would it have on others?

"Hey hun." Rocky said as he leaned forward against the fox from behind.

The raccoon wrapped his arms around the vulpine, hugging him against the plush, squishy frame he was quite happy to have a bit more of. He was being terribly affectionate, which wasn't unwelcome, but it was out of the ordinary, and they were at work. Surely someone was bound to notice. The fox found himself in a strange state where he didn't seem to worry about it much.

"Hun? I thought we weren't going to call each other stuff like that." Triac said.

"Eh, I'm feeling kinda cuddly today. I can knock it off if you don't like it." Rocky said, nuzzling into the fox's neck.

"It's not that I don't like it. But... well... what if someone sees us?" the somewhat skinnier scientist asked.

"Honestly? I don't really care. We've been doing what we've been doing for a while. Sneaking around, running off to a closet or an empty lab somewhere, having our fun, then going back to work as if nothing has changed. I wouldn't mind if we were more open about it. But if you don't want to, that's cool. I get it." the raccoon explained.

"I'll... think about it," Triac said, "Was there something you needed?"

Rocky shrugged, grinning like a fool as he leaned against his friend.

"Nah, just wanted to get some fox time. I know it was only a few days ago, and we usually go longer in between, you know, throw off suspicion. But I kinda wanna get blown up again." he answered.

"I don't even know if it's safe and you want to go diving back into my pants." the fox rolled his eyes.

"What can I say? I like Mr. Productivity. I wanna see if there's a chance for an encore performance." Rocky said with a chuckle.

The anxious, squirmy nature of being pent up had caught up with Triac again. His mind was turning fuzzy like it had days earlier. It was interfering with his work. With a sigh, he agreed, seeing it as a pragmatic matter. He could get it out of his system, then focus on his job.

Minutes later, the two boys were back in the supply closet. The fox's pants were around his ankles and the neon green tongue was slipping across his stiff member. He shuddered and held Rocky's head where it was. There was that same need to push the raccoon forward onto him. The chubbier fellow enjoyed it when he was forceful, so why not? A good shove sank the fox back into his friend's throat and they rocked into one another. The striped fellow bobbed his head, his eyes glazing over as he soaked up that dominant behavior. The fox rolled his hips into that waiting, eager maw, bumping against the back of Rocky's throat.

The same sticky ooze from before painted the raccoon's mouth, the flavor of the fox swirling about without any sign of stopping until it was all over and done with. This time, Rocky only kept one paw on Triac's sac, the other roaming over his tummy. He wanted to be bigger. That warm, stretched sensation was too good to miss out on if he could get it again. And after only a few moments of waiting, he received it.

Triac slammed his hips forward, sinking into the raccoon's throat as he felt the surge of essence flow. He crammed a paw in his own mouth to muffle his cry of euphoria as what felt like gallon after gallon poured from him. Rocky's waistline grew just as it had the previous time, stretching out until his shirt could not contain him. He gurgled happily and groped at his belly, adoring how easily the fox could fill him. When at last the two had concluded their bit of fun, the raccoon licked his friend clean and sat back to bask in the warm, squishy weight of a belly full of vulpine seed.

"Mmm, if that's what it's gonna be like from now on, I might just have to start claiming we're an item. Because god damn I don't wanna share that with anyone else. That's -my- dick and it puffs me up real good." Rocky said as he laughed.

"Pretty sure it's mine. And I dunno what the protocol is here for co-workers who date. Do me a favor and measure me down there would you? I need the data." Triac asked, then pulled a fabric measuring tape from his pocket and handed it over.

"A quick blast and you're done, back to being a scientist, huh?" the raccoon asked with a snicker.

"I'm always a scientist. And just because I want data as soon as you're done doesn't mean I didn't enjoy it." the fox said with a raised eyebrow.

The days continued in the same fashion. The pace at which Rocky insisted he drag Triac off for a quickie picked up, growing so frequent that it was almost every day. The raccoon was growing more, and in a few different ways. His weight had continued to increase steadily, making him chubbier, rounder, softer. Triac had continued to grow thinner. Within a month, he had slimmed down to the point where he felt rather comfortable in his own skin. He had been forced to update his wardrobe to contend with a skinner version of himself, and that had delighted him.

The fox never stopped taking notes, measurements, or observations. He had concluded that the serum's exposure had triggered some sort of genetic change, forcing his body to increase metabolism. The excess bulk was being removed, and it was somehow tied to how very productive he was now. The rate at which he could 'fill back up' was as quick as a single twenty-four hour period anymore. After that, he held there, ready to pump Rocky full just as he liked it.

That troubled the fox. The raccoon was showing signs that could be viewed as addiction. That was a rather unsettling discovery, but it didn't seem to come with any negative effects, just the weight gain. And Rocky was happy with it. He concluded that it just meant there was more of him to love.

In an effort to better understand what was happening, Triac decided he needed to take a sample to study. After Rocky had gotten his fill one day, the fox waited until he felt the gnawing need to empty himself. Getting a small enough sample was surprisingly difficult. Even only a few hours was enough to bring him back up to a startling level. It was copious enough to make him worry about creating a mess that would raise questions. But he managed.

Tests were run, the contents analyzed, and the results tabulated. Just as Triac was pulling up the details to read over them, Rocky came waddling in. He had gotten to a point where he almost didn't fit in the supply closet with the fox anymore. They had been forced to find an alternate location for their trysts. He leaned in against the fox from behind and rumbled away happily, squeezing and rubbing over the slender vulpine's chest.

"Mmm, how's my little foxy today?" Rocky asked playfully.

"Oh come on, I'm not 'little'." Triac complained, but leaned back into the affection.

He had come to enjoy the raccoon's doting. He had even come to think more fondly of the idea of making their friendship more than that. But he was still fighting off concerns of what the serum had done to him, and subsequently to Rocky.

"You're skinny enough for me to enjoy picturing you in a speedo. I say we go out and buy you some skimpy undies so you can really enjoy your new weight loss." the raccoon said and smirked.

A blush tinted Triac's cheeks a rosy pink. He had thought about something like that now that he was a good deal more fit and trim. But he had to focus, so he pushed such pleasant notions away, at least for the moment. He began looking over the readout from the chemical analysis. He had neglected to mention to the technician running the tests what it was he was requesting get run. How did one fill out a request form on analyzing the contents of semen?

"Okay so... let's see here," Triac said as he read over the print out, "There's a high vitamin and mineral count, substantial protein content that's significantly higher than expected, complex sugars, carbohydrates, saturated as well as mono and polyunsaturated fats. Holy crap, it's like a protein bar mixed with a milkshake with a vitamin supplement thrown in."

"Hmm? What's that you're lookin' at, hun?" Rocky asked sweetly, still stroking his lover's chest from behind.

"It's a chem analysis of... well... of my cum. If these readings are right, it's more nutrient rich than a mother's breast milk. That's why you've been gaining weight. It has a high caloric content." the fox said, stunned by the findings.

"So, does that mean I can just have you for lunch instead of what they serve in the cafeteria from now on?" the raccoon asked with a giggle.

"Yeah... you could. A person could actually live off this stuff," Triac said breathlessly, then froze as he read on and found something he had feared, "There are half a dozen complex compounds that are known to trigger dopamine production. They're in a low concentration, but it's enough to get a mild, chemical-induced pleasure response. You combine that with the fact that you like ending up so swollen and it's like comfort food and crack in one shot."

"What's that mean?" Rocky began dropping his paws down to tease at the fox's groin, fondling him idly through his pants.

It made Triac squirm a little. He wanted to go find a quiet room and let the raccoon have his way with him, but that would only make the problem worse.

"It means you're addicted. You're chemically addicted to what I pump into you. I'm losing weight, you're gaining it, and it's keeping you hooked. This is... this not good. I need to go tell the boss. Maybe he can get me a team to figure out how to reverse it." Triac said as he stood up, feeling a sense of urgency as he headed for the door.

"No, wait!" Rocky chased him, wrapping his arms around the vulpine as soon as he was close enough.

How did he move so quick when he was so big?

"I have to, Rocky. You're sick." Triac said.

"No I'm not. I just love my fox. That's all. C'mon. If you really wanna go talk to the boss, lemme give you a quick round of 'tension relief'. You're too distracted to talk to him like this, aren't you?" the raccoon's voice was smooth and seductive, making the idea sound rather alluring.

"Y-yeah... I... I guess it couldn't hurt." the fox said.

He wasn't going to be able to get up the will to talk to his supervisor after he was done. He had been enjoying all of this too much. And so had Rocky. With a sigh of resignation, and a thrill of giddy anticipation, he was led off from the lab by the hungry raccoon wanting his lunch. It was odd to think of their sessions like that, but there was a certain tingle of delight that came with it.

The supply closet was no longer an option. It was just too tight a squeeze for the chubby raccoon, only getting chubbier with every filling. The fox followed obediently as his boyfriend--they might as well say as much now--led him through the building. There were a few offices that had been emptied recently. The floors were going to be redone, so the 'residents' had been temporarily relocated. That provided them with a nice, empty place to do the deed.

Rocky wrapped his arms around the vulpine, mashing his lips to his lover's. Triac pressed back into his embrace, unable to resist. A paw kicked the door closed behind them as they worked to undress one another. They had plenty of time. No one would be coming to that floor anytime soon. The work crews were on lunch and the rest of the lab's staff had no interest. It was the perfect crime.

"Rocky, hold up." Triac said between gasps for breath and the battle for oral dominance.

"What's wrong hun?" the raccoon asked, not wanting to listen.

"I want to try something different," the fox managed to pull himself away to speak, "You've been doing the same thing all this time. I want to know if you get the same 'benefit' if we try it another way."

Rocky's eyes lit up as he quickly pieced together what Triac had meant. The green in his highlights suddenly shined brightly, the rings on his arms following suit, but not with the same strength. Apparently his assumption that continued doses would have the desired effect was indeed working. A few more weeks and every bit of green on him would glow when he was in some sort of elated state. He didn't seem to glow anywhere near as brightly as when he was aroused. It made it very easy for Triac to read him.

"My fox wants to bend me over? Naughty, naughty. You know I can't say no to you." Rocky said, grinning as he spun about.

Before he could get all the way around, the vulpine stopped him.

"No, lay down on the desk. On your back." Triac said.

"Even better. My fox wants to watch me swell." Rocky said, waddling over to the desk as he had been told.

The raccoon hopped up onto the broad, flat surface, listening to it creak just ever so softly under his weight. He then laid down, lifting his legs and spreading them. Triac stepped in, pressing himself against his friend. A hum of glee escaped Rocky as he felt that rigid, bobbing length press against him. The fox hadn't even waited for him to get ready, he had just gone for broke.

The head wedged itself between the raccoon's cheeks, mashing against a firm entry that refused to yield until Rocky managed to relax enough. It didn't take much convincing. Within moments, the fox was in, sinking the whole of his mast into the heated depths under his boyfriend's tail. Triac's jaws opened, permitting a soft groan to drift around the vacant office. He wanted to remain there, exactly like that, for as long as the world would let him. Rocky meanwhile was interested in more than just being kept spread.

The rotund fellow's hips rocked upwards. He closed his legs around the fox, squeezing in more tightly against him and shivered with glee as he could feel every last hint of that glorious invader sink into him, right to the hilt. Before had been a good start, but it lacked a certain something. There was a bulge swelling at the base of the vulpine's member, and that was what the raccoon wanted.

Triac pulled his hips back, feeling Rocky's paws--crossed at the ankles--press against the base of his spine. He didn't need to retreat far, just enough to build up a head of steam on the forward stroke. And it worked. He slammed home anxiously. A wet slap sounded between the two as they mated, lost in the throes of their passion. Moisture oozed out of the fox's spire, smearing around the interior of the raccoons innards, making the next stroke that much easier, as well as those that followed.

The desk began to whine and squeak as the two boys pumped against one another, their breath turning ragged as they worked so hard. A stead pace quickly formed as they fell in sync with one another. Rocky's own length waggled about atop his belly, leaving a damp stain in his grey fur, a stain that was going to turn white very soon.

Below, the knot the raccoon was after was swelling, bulging, mashing against his entry. Triac squeezed his eyes shut, bared his teeth, and panted. He rocked with more strength than he remembered having. His legs were starting to burn with the sting of use, and his entire core was beginning to tense. He slammed forward one last time, mashing that engorged swell into Rocky's depths and unleashed himself.

The blast flooded forth, gush after potent gush. The sticky, white deluge poured in, flowing through the raccoon's rectum and further still. Rocky felt his stomach start to bulge with the added contribution, prompting his paws to grope at the distending abdomen that had already gained so much. He huffed and shuddered before letting out a moan as well. His own length spasmed powerfully, creating the milky stain that had been threatened all along. His middle creaked and gurgled as it rose higher over him. Triac opened his eyes as he felt his climax begin to subside, watching as he practically inflated his boyfriend.

It was one hell of a sight to behold. He could see Rocky's green highlights pulsing, the glow becoming suddenly brighter, then dimming. It was almost in time with his heartbeat. He'd really hit a 'tender spot' and the raccoon was loving it. He had enjoyed it quite a bit himself and welcomed the sense of relief, the emptying.

"So... th-that... is what... you've been after... the expansion. Watching it... happen... that's pretty hot." the fox said as he fought to gulp down lungfuls of air.

"Yeah... it really is." Rocky moaned out.

For a moment, the two remained as they were, holding still, the fox still buried in the raccoon. It would take a moment for him to 'settle down' and remove himself. That was part of the fun of the knot in Rocky's opinion; getting stuck and not getting to pull off.

"You know... if I've... done my math right... all the calories from that... it's more than I'm consuming. That's why... I'm losing weight." Triac said.

"Hmm, does that mean if I feed you really well, you'll cum even more?" Rocky asked, half joking, half serious.

"I don't know, but at some point I'll need to work out a balance. Otherwise you'll suck me completely dry until I'm nothing but fur and bones." the fox answered.

"Well, then I better make sure you're eating a lot. Can't let my boyfriend go hungry. I'm gonna stuff you real good so you can stuff me even better." the raccoon said, grinning as he squeezed his ankles around the vulpine's waist.

That worried Triac. He was taking advantage of his friend's altered state of mind, his addiction, for his own self gratification. Rocky was enjoying it, so that made it okay, didn't it?

The fox thought to himself 'just wait until the ethics committee hears about this'.