Symptoms May Include...

Story by Serathin on SoFurry

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A commission for Frysco.


Symptoms May Include...

It was 7 am when the alarm blared to life, causing the male snow leopard to turn over in his bed with a weary groan as he shut off the screeching noise. Carter could still feel the pulsing of the bass from the club last night, which made him wonder if going out the day before work was a good thing. It had been a friend's birthday and he had only stopped in to say hi and leave, but somehow had gotten roped into staying for half the night... and that was what he could actually remember. As he rubbed the last of his sleep from the eyes he almost wretched from the smell of alcohol and cum on his fur. He began to wonder what kind of party he was in, and how much of a shame it would be that he couldn't remember most of it.

Carter trudged over to the bathroom, not bothering to put on anything other than his boxers since he could hear his roommate snoring loudly in his own bedroom. As he started to brush his teeth to get the taste of last night out of his mouth he had to stop. There was an intense tingling in his mouth that caused him to immediately wash it out, the cool water causing his entire body to shudder as it ran over his sensitive tongue. Once everything was free he opened his maw to figure out what the problem was, hoping it was merely an abrasion from overly-hot food. What he found, however, was something far more strange.

Instead of his normal, rough tongue, was something much thicker. It looked like he was constantly curling his tongue, except that he wasn't was doing anything. When he stuck out the appendage everything came clear, the tip of his tongue shaped like the head of a cock complete with a tiny slit at the edge. He experimentally ran a finger along the edge of the smooth flesh, which sent a shiver down his spine. It was just as sensitive as the original thing, and the more he played with it the harder the tongue flesh got as well as his cock.

"I need to get the hospital." He muttered, though it was getting slightly harder to speak as his tongue extended passed his lips. After giving himself a few minutes to calm himself down he was able to hide his newly-modified appendage in his mouth, then put on his clothing. He tried to keep calm, but it was hard when his tongue had become a penis. The worst part was that anytime he tried to move his tongue in his mouth it only served to arouse him even more. It made things extremely difficult when he had to call the hospital to make the appointment, every vibration sending a pleasurable tingle through his body.

After nearly an hour of waiting in the hospital lobby, he finally got to see his normal physician. "Mr. Artes?" Dr. Hansi, a male ocelot, said as Carter sat on the examination table. "So I see from your charts that you may have contracted an STFD."

"An STFD?" Carter asked.

"Sexual Trans-Formative Disease." The doctor replied as he put on some latex gloves. "There's been quite a few of those floating around lately. From what you described it sounds like a simple case of genital reformation, have you had oral sex with a man in an area other than a penis? Shared a dildo with anyone?"

Carter was taken aback slightly, and though he couldn't remember a lot of what had happened last night he was pretty sure that nothing like that was going on. After he had shaken his head to a number of increasingly kinky options, the doctor just shook his head. They took some of his blood and checked his vital signs, and after nearly half an hour of diagnostics the ocelot shook his head. "Well we're going to have to do some lab work, which will take a day or so." Dr. Hansi said once he had finished.

"What do I do until then?" Carter asked, still rubbing the sensitive mouth area around his cock tongue.

"Just go about your work as normal." Dr. Hansi replied. "Whatever you do, don't play with it just in case. As soon as I get the results back I will let you know." As Carter got up, the doctor looked at him sternly. "Remember, no stimulation of the offending organ, you might just make it worse. Just be thankful you can talk at the moment."

Carter sighed and got off the table, the doctor giving him the final requisite paperwork for his insurance before he was sent on his way. He looked down at his watch and realized that he still had time to get to work and only miss about an hour. As much as he wanted to take a sick day off he had already blown them all earlier, which meant he had to go or get in serious trouble. It wasn't an obvious affliction though, as long as he kept his mouth shut no one could see his mutated tongue. If he could just get through the day then he could spend the rest of the day under the covers of his bed while he waited for the test results.

***********************

"Carter!" The snow leopard heard his boss, a very large Bengal tiger, roar from his office. "My office, now!"

Carter could feel his heart drop down into his feet as everyone turned to look at him for a second before they pretended to go about their business once more. It wasn't the yelling that troubled him, his boss would call people into his office at least twice a day doing that. What bothered him was that for the longest time he had lusted over the tiger's huge form, his muscles hardly contained within the suit that he wore every day. He had to shake his head of the thoughts as he could already feel his mouth stir slightly, both his members starting to grow excited as he pushed the sexual wet-dreams back into the recesses of his mind.

"I've just been going over your numbers Carter." His boss explained in a much calmer tone once Carter had gotten inside his office and shut the door behind him. "Your third quarter report is very weak, the charts are far too loose in their interpretations. Normally I wouldn't get on you for this, but we have a huge audit coming up and I don't want to give those bastards any reason to poke around here than necessary. Can you reformat them and get them to me by the end of the week?"

"Yeth." Carter replied, his toes curling as he realized that his arousal had begun to interfere with his ability to speak. As much as he tried not to look the tiger had his sleeves rolled up, which exposed those perfect biceps that flexed slightly as he talked. What was worse was the salty fluid he could taste dripping into his mouth as he stood there embarrassed, his mouth cock leaking pre into his own mouth that he was forced to swallow in front of him.

"You alright?" His boss asked him, concerned. "You haven't gotten one of those ridiculous tongue piercings, have you?"

Carter quickly shook his head, praying that he wouldn't be asked to show it for proof, especially when the tiger leaned back and exposed his orange and black striped six-pack abs. After another inquisitorial glance he was dismissed, and instead of going back to his desk the snow leopard immediately went for the bathroom. Once inside he opened his mouth wide, his cock-tongue fully erect as he let his saliva and pre drip into the sink. He had almost been driven over the edge, the urge to hop into one of the stalls and try and release the 'tension' was overwhelming.

He never got the chance though as one of his officemates, an arctic wolf named Garret, walked into the bathroom as well. "Hey Carter, heard you got chewed out-" the wolf started to say, his words cut short as he noticed the thick cock between the snow leopard's lips. Carter tried desperately to put it back into his mouth, but the flesh was still rock-hard from his encounter with his boss and easily passed where his lips could stretch too. His chest was pounding as he finally just turned away from him, waiting for the impending fallout from his co-worker's discovery.

Surprisingly he heard no yell, in fact after a minute the only thing he heard was the sound of the bathroom door locking. "I didn't know you were a sexual deviant Carter." He heard Garret say in a seductive tone. "Especially one who is into 'that' sort of thing."

Carter's fear spiked and he slowly turned around, hoping to explain that what he had was merely the product of some disease when the wolf's face rushed forward to meet his. As their lips were mashed together he felt his co-worker's mouth open slightly to let in his cock-tongue, his own quickly swirling around it and nearly causing him to orgasm right there. He wanted to tell him he didn't want this and that he wasn't supposed to stimulate it, but as he was held up by those firm paws and felt the aggressive wolf try and push more and more of it into his mouth all he could do was moan and paw against his chest.

As he mouth was assaulted by the long canine tongue he felt one of Garret's hands slide down between them, undoing their pants with expert skill before he let them fall to the floor. His real cock immediately became buried in the thick white fur of the wolf's chest, which rubbed against his sensitive flesh with such an erotic tingle he had to grip the sink in sheer pleasure. Very quickly he was backed against the wall, the wolf's muzzle never ceasing to suck off his tongue as his member slid in against his thighs. By the time the snow leopard even realized what was going on he had both legs up in the air and was braced against the wall as the tip of the other male's member had begun to press between his cheeks. When they finally separated for a second so Garret could get into a better position he motioned towards the door and tried to say he wasn't interested, but all that got around his cock-tongue was unintelligible speech.

"Oh don't worry, I locked the door and put the out of order sign on it." Garret replied with a grin. "We'll be done before anyone realizes we're gone anyway."

Before Carter could try again a long lick against his still-exposed cock-tongue caused him to arch his back in pleasure, which caused him to slide down the tile wall and onto the wolf's length. The snow leopard bucked slightly, but with Garret's hands pressing against his thighs and his body pushing him into the wall he couldn't do anything to stop it as inch after inch of wolf flesh disappeared inside of him. It felt so good, feeling it spread him open, he couldn't help but open his mouth wide in a loud moan. As he did his mouth was filled with the other male's muzzle as he took as much of his cock-tongue in his mouth as he could. It was the kinkiest blow-job in his entire life, and with his other end stuffed with cock it felt like he was with two guys at once.

Carter suddenly felt himself slip slightly, and as he felt one of his wrists get grabbed he realized that his co-worker was guiding his hand down to his own cock. Despite neglecting it his feline member was still as hard as steel and he quickly began to pump himself in time with the rolling of his partner's hips. Every so often the wolf would hit his prostate and he could feel his own cock jump in his hand as well as in his mouth. Garret was in complete control of him, every caress in his mouth and in his tailhole was determined by him as they continued their carnal mating.

As the snow leopard felt himself coming close to orgasm he felt his throat begin to tighten slightly, his eyes rolling back in his head as a wave of pleasure accompanied the strange feeling rising to his mouth. Every muscle in his body tightened in sheer ecstasy before he released, both cocks shooting jet after jet of thick seed. The wolf greedily gulped down every last drop, keeping a tight seal around his mouth as his cock-tongue emptied itself for the first time. In the haze of his orgasm he could feel Garret's body tighten before he came as well, a small amount of cum dribbling out of his backside as he was filled.

As they came down Garret dislodged himself from his mouth, panting heavily as he wiped the residue of saliva and cum from the fur on his cheeks. "That was a lot of fun." He chuckled as he pulled out of Carter's slickened tailhole before lowering him to the ground. "I have a card for you, it's a place where other modded furs hang out and have fun. I think you'll fit in quite nicely there..."

The snow leopard looked down at the card that the wolf had given him, than yelped slightly as he felt a hand give his sore ass a squeeze. Once Garret had wiped the cum from his legs and left Carter started to do the same, though he was covered in far more sexual fluids than his partner. As he tried to wipe the drying cum from his fur he began to wonder if this was going to be habitual. He had never known his co-worker to be so aggressive like that, and the worst part was that the feeling was so intense and amazing he would have been lying to say he wouldn't do it again.

As the last of the soiled paper towels went into the bin he looked in the mirror and opened his mouth once more. By now the entirety of his tongue had been converted to cock, the circular base attached right to the base of his throat. It wasn't so bad, he thought to himself as he closed his mouth and got dressed. Aside from getting used to it the appendage was no more worrysome than his original organ that he nestled safely in his pants as he pulled them up. A small part of him began to wonder if perhaps he could keep such a thing while he walked back to his desk, rubbing his sore jaw. Out of the corner of his eye he saw Garrett at his desk as well, who gave him a small wink that caused the flesh in his mouth to begin to swell once more...

********************************

Carter was more than relieved when he made it back home, having avoided several close calls of his oral arousal making itself known to his co-workers. The soreness in his jaw had also spread to his entire muzzle, accompanied by a stiffness that made it even harder to talk than before. He had begun to worry that his exploits with the wolf had caused his condition to worsen, especially as the feelings of pleasure that radiated from his tongue intensified. Despite his doctor's warning once he was in the privacy of his own home he slid his cock-tongue between his lips, giving himself what he could only describe as a reverse blow-job.

The snow leopard purred as he sat back in his bed once he had gotten naked, continuing to dart his tongue out and in while one hand went to his groin and stroked the sensitive flesh there. The stimulation from both cocks was heavenly, though he realized as his hands were wrapped around it that it felt... smaller than usual. Looking down while still masturbating he found that his cock was indeed far less impressive than before. Though it should have been disconcerting, he was far too wrapped up in the sensations of his ministrations to care.

He was so enraptured with the stimulation he almost missed his phone ringing. With a whimper he managed to stop himself and take out his cell, growing excited when he noticed it was the doctor's office. When he tried to answer, however, he was shocked to find that the flesh of his cock-tongue seemed to have fused with his lower jaw. He tried to move it, but as he tried to pull back his lips he found them integrated into his flesh as well.

"Mr. Artes, this is Dr. Hansi." He heard the gruff voice of his doctor say. "The lab results turned out a hit early; unfortunately it's not a good thing in this case. It seems you've contracted Phallistisis, a very rare STFD with no known cure. Since you seem unable to respond I assume it has already started to overwhelm your mouth, which means that you have twenty-four hours from the time that the fusion begins until you reach the... final stages of this disease. At this point you have two options for your final outcome, you can either let the changes progress and you'll turn into an inanimate dildo, or you can find someone to put their maleness into you during your final changes and become their cock. Once again I'm very sorry for the bad news... oh, and one more thing, in your final change you will cum out most of your body mass and that will be the only time you can pass the disease, so please be careful in your final hour. If you require anything-"

Carter hung up the phone, on the verge of tears as he sat back down on the bed. Become a dildo or be someone's cock... what kind of choice is that? He immediately jumped onto his computer, trying to find out more about the STFD that he had contracted to see if there was anything he could do to reverse the changes. Unfortunately the computer confirmed what the doctor had told him, which the disease was extremely fast-acting and caused irreversible transformation. The time window for infection was also extremely small, which meant that he probably contracted it at the club by someone who had just undergone the final transformation himself. His sadness turned to anger as he realized that he his life was over because one inconsiderate jerk decided to go out one last time before he turned into a dildo or cock.

The more he searched the more he found that his was not the only permanent STFD either, as he found out through several videos. One of them showed a disease named Vagicrosis, which was similar to his except that instead of a cock growing out of his mouth it turned into a pussy instead. He watched as a female horse became the vagina of her boyfriend, which effectively turned him into a herm. Then there was another one that wasn't even named anything scientific but merely called the 'tenticular terror', which was underneath the video of a time-lapsed video of a male wolf. All he could do was watch in horror as the poor male lost all of his body hair as he continuously stroked off his cock, and then his tongue as it both appendages grew longer and longer. Soon after that his fingers and toes lengthened and began to wrap around the body, the wolf's eyes rolled back into his head in blissful pleasure. More tentacles pushed out of his ears, his nose, and even his nipples as they began to leak. Finally his entire body exploded outward, the camera cutting out as tentacles pushed into the lens and broke it.

He was about to close out the screen when he was suddenly notified of a new e-mail from one of his friends. It was a video file labeled 'you got hosed' and seemed to have been taken off of a cell phone. Almost immediately he recognized the bathroom of the nightclub that he had been to for the birthday party, where he saw himself knocking drunkenly on the door of one of the stalls, asking what was taking their friend so long. When they heard a loud groan both him and the friend that took the video giggled wildly, the Carter on the video quickly opening the door to surprise their friends in the act.

The snow leopard's eyes widened as he watched himself get covered in a deluge of cum, the filmmaker jumping back as rope after rope of thick white fluid

As he slammed his computer shut in frustration when he heard the door of the apartment open, his roommate coming home from work. The wild dog named Ax had lived with him for nearly a year, becoming friends in college and eventually moving in with one another when it seemed most advantageous too. Unfortunately at the moment he knew nothing of his tastes in others, except for the one time he brought a girl into his room to 'study'. But as he brushed a hand against his cheek and felt the lack only sensitive flesh instead of fur, he knew he had to ask him something of a deeply personal nature.

Ax hummed quietly to himself as he watched his instant dinner cook in the microwave, his stomach rumbling. As he waited he could hear Carter's door shut, the snow leopard mumbling something behind his back while he rummaged through the drawers. "Hey, did my new movie come in?" He asked as he pulled the dinner out of the microwave, only to drop it onto the floor when he saw his roommate.

Carter's muzzle had completely lost its fur, the skin underneath a shiny white with black spotted pattern that was broken only by a single slit he assumed he was breathing out of. His mouth had completely disappeared, his muzzle bloated to the point where it would be the same size at the rest of his head. The snow leopard was also at least a few inches shorter than before, the normally equally tall roommate now having to look up at him. As he continued to look his friend over in shock he also noticed that his cock, which he had only seen accidently when he went into the bathroom as he was getting out of the shower, had completely disappeared with only a bare patch of white skin similar to that of his head.

Once Ax had gotten over the shock of his roommate's appearance he noticed that Carter had a piece of paper in his hand, which he took and started to read. It described everything that happened to him, from the STFD that he had picked up at the club all the up to their present time... as well as a very intimate request. "Oh... Carter... I..." The dog said, holding his hand up to his mouth as he read it a second time.

'Please do this for me.' Carter wrote on another piece of paper, looking at him with pleading eyes. 'I don't want to be a dildo... I'm so scared.'

Ax's shoulders dropped slightly as he looked up again and saw the fear in his roommate, his body visibly shaking as his cock-head dropped slightly. He was unsure of what to do aside from lament for his friend, his situation terrible. As he saw a tear drop from his eye he walked over and hugged him, feeling him tremble in his grasp. He could feel his shirt and chest fur become wet as he held them there, trying to avoid rubbing against his head too much since it caused the changing snow leopard to shudder in pleasure.

"I'll... do it." Ax said once they had separated. "I've always been... curious about being with another male, though fear has prevented me from acting on it. If you would want to be my cock, than I will be more than happy to oblige you. I suppose it is better than being a dildo forever..."

Even though he couldn't speak Carter let out a happy noise from his throat and hugged him once more, pressing his sensitive flesh against Ax's fur. He could feel his throat begin to stiffen slightly from the stimulation, as well as small clumps of fur falling from his body as he continued to rub. Ax felt slightly uncomfortable as the pressure pressed against him started to get harder and more insistent, pulling him away from his body. As he did a small dribble of clear liquid dribbled out of the head slit, Carter's throat growing larger as quite a bit of fluid ran down his body.

"Alright, when I get home from work we should have enough time to get you ready for... this." Ax said, Carter nodding slowly. "It looks like stimulation speeds up the process, so try to save yourself for when this final change happens. Heh, I honestly never thought my first time with a guy would involve my roommate... or getting a new cock."

The two stayed up for a bit after their encounter, Carter leaning against Ax as they watched a few of his favorite movies together. Even though his roommate had agreed to the bizarre request he still couldn't get rid of the knot in his stomach, wondering what would become of him after he would become nothing more than one of his roommate's appendages. The doctor said he'd still be able to feel, but would he even have the capacity to understand the pleasure he was getting? Would he be aware, or nothing more than a barely sentient cock? The testimonials from those who had help others with Phallistisis ranged from feeling nothing to feeling the presence of those that had become their cocks, some even saying that they could communicate with them through some sort of telepathy. Even as the worry continued to gnaw at him he felt the fatigue of the day catch up with him, falling asleep as he felt Ax's arms wrap around his shoulders...

*******************************************************

The next day Carter woke up he was on the couch, a blanket draped over his body as he slowly hefted himself off of the couch. He quickly noticed was that his eyesight had worsened dramatically, hardly able to see anything but vague shapes as he sat up. When his body rubbed against the fabric of the blanket he also found that his fur from the waist down had been completely shed, replaced with the accursed cock-flesh that shot tiny bursts of pleasure through his body as he tried to get up to look at himself. Unfortunately his legs no longer seemed to work properly, the first step he tried to take causing him to tumble off the couch and onto the floor on his back.

When the snow leopard bent up to see what was wrong he immediately felt sick, his legs had disappeared all the way up to the joint. His thighs had also become outrageously bloated and the more he stared at them the more he realized that they had been converted into a rudimentary testicle sack. As he pressed the lower half of his body onto his floor he could feel the liquid sloshing inside of them, his insides converted into cum that would be his final transformation. His arms had also gotten significantly less developed, though he could still control them enough to feel how tubular his body had gotten.

I must look ridiculous, Carter thought to himself as he laid there on the floor. With no way to check the time he didn't know how long it would be until Ax got home and took him, wishing that it would happen soon. As the day wore on he felt his new testicles growing more and more swollen, the pressure growing in his body. He couldn't bend his neck anymore and every time he rubbed his body against the carpet he could feel his flesh growing stiffer from the sensations. It grew to the point where he had to stop moving in order to prevent himself from climaxing. In his mind he continued to chant that he just had to hold out, just continue to hold out, though his voice was becoming less and less effective as time wore on.

Finally after what seemed an eternity he heard their answering machine go off, the sound of a panicked Ax on the other line. "I don't know if you can still hear this, but I'm still on my way! There was some sort of accident on the highway and I'm currently stuck in deadlocked traffic, but as soon as I can get to the next exit I will be able to hit the backroads in order to reach you. Hold on for just a little bit longer Carter!"

The almost completely changed snow-leopard cock felt his hopes sink as the message suddenly ended, knowing that the wild dog would be at least half an hour longer. By now every inch of his four-foot long body was suffused with such a blissful pressure that the slightest move would set him off, his body ready for release. He wasn't even sure if he could be saved anymore, if his body was completely dildo-shaped there might not even been a hole for his roommate to penetrate. His entire form was ready to blow, the only thing keeping it back was the thin thread of hope that his savior would burst through the door and save him.

It was that thought that continued to keep him going, lying perfectly motionless as he continued to chant despite the sheer weight of pleasure pushing on his psyche. Finally he heard it, the sound of a key being put into the door. He couldn't believe it, Ax had made it just in time to rescue him from his fate of being a mere dildo. The huge snow-leopard cock body tried to inch forward to meet him like a snake, but as his body once more dragged itself across the floor he realized too late the fatal error he had just committed...

Immediately all that pleasure that had suffused into every inch of Carter's body rushed up towards where his head used to be, the slit opening wide as a torrent of cum flooded out of his body. The force of his orgasm pushed his body back as it began to shrink, wave after wave of the sticky fluid expelled from his body. His size quickly shrank down to a mere foot in length as he shot load after load, his thoughts boiling away with every bucket of cum until the only thing he could think about was pleasure. After only a minute there was nothing left of the snow-leopard except for the dildo, which rested in a puddle of its own juices.

Ax stood at the doorway with a dumb-founded expression on his face, his clothes and fur dripping with semen. He had seen Carter laying there in wait as he opened the door, his pants already unbuttoned to try and save his friend as quickly impossible. Before he could even step foot into the doorway though the white and black patterned dildo seemed to rear up slightly as it tensed up, then almost knocked him over as he was caught in the first blast of the hot cum. He closed the door and tried to move forward, but he was hit several more times as the walls and furniture were coated with a thick layer of white.

"Carter!" He shouted once the torrent ended, kneeling down in the soggy carpet as he picked up the dildo of his friend. "Oh Carter, I'm so sorry..."

An indescribable feeling of sadness and regret washed over Ax as he brought the still warm dildo into his room, lying it down on the bed in some hopes of making it feel comfortable. Once he had done that he wondered what he should do, looking over at his desk at the contact list he had kept as well as someone's business card. He decided he should at least contact those people, no doubt in his panic the former snow leopard had forgotten to do it. As he left a voice mail on the first number, however, he found it hard to make words and his tongue felt slightly numb.

Ax quickly ran to the bathroom, his clothes and fur crackling from the cum that had dried on it, and opened his mouth. "Oh no..." he said terrified, touching the small slit that seemed to have formed on the tip of his tongue...