Ilulu x Catboy Double TF Story - Fizzy Sodas (Patreon)

Upon seeing a canister of some generic, brightly colored can on your kitchen table, you didn’t pay it much attention and made sure to leave for school right away. However,  upon coming back you see that it’s still there. Didn’t you tell your roommate to not leave their stuff out around the house, like, just yesterday? Whatever, they’ve been pretty good about it despite this one can. Stranger still, upon further inspection, the can is unopened. You pick it up and read the label to see a flashy brand you’ve actually never heard of before.

“Shortstack Soda”, it reads, in quite a seductive font as well, moreso in the sense that it’s made you thirsty than aroused. You know that he’s been at the place for at least several hours, so why would he leave this out? He must not care, so you crack the lid open without a care in the world. He’s probably got a case of these anyways, you’re sure he wouldn’t mind sharing one even if he did care.

You press the edge of the can up to your lips, anticipating the taste as you tip the drink upwards ever so slightly until the first drop hits your tongue. It’s amazing! The taste is really nothing like you’ve ever felt before. You can really only describe it as… horny? If horny had a taste that is. You launch from dribbling it into your mouth to guzzling it, finishing the drink within seconds, all the while your cock has been throbbing harder and harder in your pants, most likely due to that horny taste.

“Aaahhhh…” You let out a sigh and take a big breath, followed by quite the burp. The horny taste continues to linger in your mouth, your tongue instinctively trying to get every last bit of the taste it can. As it does so, the taste of horny spreads throughout your entire body, your skin somehow tasting it. It’s a little freaky, but the intoxicating lust turns your brain’s fear right off. The symptoms soon become similar to actually being rather drunk, minus the sickness and plus a lot of horniness. Whatever was in this stuff seems to be acting very fast, and you scramble to your room to get to a more private place to ride through this trip.

Even through the intoxication, you can still tell that something is wrong with your body. Everything about your perspective seems off, each stair seeming to be higher than the last. When you finally get to your room, the door is much closer to eye level than you’d expect it to be. Stumbling in and landing your bed, you see bright red twirls of hair beside you, undoubtedly from your own head. You start to move a hand up to feel if the hair is really real, and find that it is in fact attached to your head. Silky, smooth, and a natural red that no normal human could accomplish naturally.

Your ears feel a little strange, as if someone is pulling on them from the edges ever so slightly. Placing your hands on them, you notice that they’re just a bit pointer than they were before, unable to notice how small they are to your much smaller hands. “Ughhh… fuckkk, what the hell is happening to me…” You grumble, while at the same time shimmying down your pants and boxers at the same time to gain access to your dripping cock.

Said boxers, along with the good chunk of your crotch is coated with your precum, allowing you to get stroking effortlessly without any lube. Each stroke sends pleasure exploding through your body, feeling like you’re one stroke away from cumming each time, but you never do. Your hands continue in exploring the tingliest and warmest parts of your body, your fingers feeling all over your face while your cheek and jawbone shift to provide a more circular, feminine look. Your fingers eventually stop on your lips, feeling how abnormally puffy and delicate they are. Just running your smooth fingers against their sensitive pinkness amps up your arousal.

Each stroke of your cock seems more powerful than the last, making your entire body melt. It may not be a hyperbole, as your muscle definition is fading away with each lustful pump. It’s not something you can notice in your drunken state, but god does the sensation of all that pesky muscle fading away feel soothing and orgasmic at the same time.

With your brain melting along with your body, you even start to drool a bit, enthralled in your own depravity. “Yes… unghh… fuck! Let me… cum!” You exclaim, unsure if your roommate has gotten back yet, but not really caring if he has. Despite all your efforts, and the pleasure that’s flooding your brain, not a single milliliter of cum squirts from your shaft.

The horny taste of the drink fades from a majority of your body, but culminates in your lower half, prompting you to move your available hand down to feel what’s about to happen. The name of the soda keeps running through your head, Shortstack Soda, Shortstack Soda, Shortstack Soda… There’s no way, right? A bit of that doubt is chipped away at as you hear a soft gurgling coming from your lower body, namely from your butt and thighs.

The gurgling continues to grow louder, resulting in soft flesh pouring into your hand. It gets increasingly more difficult to feel the bone in your butt as it becomes increasingly wide and thick. Each cheek swells after the other, taking turns in growing to give you a womanly ass, your thighs of course following and struggling to keep up.

Even with these drastic and sudden changes to your body, you can’t help but keep masturbating, it’s the most important thing in the world to you. You pump, and pump, and pump, your hips cracking softly while you do so to afford more room for your ass to swell. Its mass squishes against the bed, with your thighs being more noticeable as their squishiness makes your legs look twice as wide as they were before.

You’re sure that, even when you’re not sitting or laying down, your legs will be much thicker than before. Especially given the fact that they’re still swelling. It’s almost like the sound of soda being chugged, GLUG… GLUG… GLUG…  But instead of filling up someone's stomach, it’s filling up your juicy thighs and pillowy ass. You’re glad that you didn’t read the label or do any research, otherwise you may have never experienced this immense pleasure in your life knowing what it would do to your body.

With the expansion of your ass seemingly slowing down, the tingles move up to your head for a moment, focusing on two points near the front of your scalp. Digging your fingers into your hair, you feel a bulge at one of the points, and another bulge at the other. You notice that the skin that’s there doesn’t really feel like skin at all, but instead like something more hard and scaly.

A bit of your conscious mind grows worrisome as the bumps grow larger and longer, but your horny mind is too busy to allow anything else to function. They keep growing and lengthening, becoming thicker in the process until you’re unable to wrap your hand around one entirely. They don’t quite seem to be straight, like you’d expect from what you assume from horns, but are instead incredibly curvy and thick, going backwards rather than up and out.

It’s interesting for sure, but it doesn’t quite matter to you much at the moment, too busy thinking about the potential pleasure from your ongoing transformation. “God… I hope it doesn’t take away my… nghhhh… cock, I need to… ghhhhh…” Each word sounds more feminine than the last, sounding a bit bratty, but still adorable.

No more changes seem to be coming yet, so for the time being, you put what little focus you have into cumming. “Need… need… need!” Sounding like a bitch in heat, drooling all over yourself and the bed, you approach orgasm but never quite reach it. In fact, you seem to be going beyond what the last moments before orgasm actually feel like.

Taking a peek down at your cock, you see that it’s actually quite a bit larger than it was before, even in proportion to your old body. Someone once told you that smaller dicks feel more pleasure, but this just proves that to be so amazingly false. “Holy… it’s huge~” You marvel, seeing it nearly being twice as thick and just under twice as long. You barely even noticed the fact that one hand wasn’t doing it anymore. “Maybe if I use two…” You mutter in a sultry voice, getting a glob of pre from the tip over your free hand and placing it on your cock.

Both of your hands combined are just barely able to wrap around, but it feels better than ever with both. You start off slow, your hips bucking instinctively to the sudden increase in stimulus. With the first stroke, you feel your nipples tingling a bit, with the horny heat manifesting in your chest. “Wait, when I stroke…” You say to yourself, stroking a second time, nice and slow, feeling your chest become slightly more weighty. “B~Breasts… I dunno how big they’ll get, but, I have no other option. I have to… I need to cum!”

Biting the bullet, you increase your pace to the same rapid pumping you were doing before. You hear the door to your apartment open and close, but it’s a passing thought, consumed by your boundless lust. Each and every pump makes your loose shirt just a little less loose, what could be mistaken as man boobs quickly becoming what are undeniably tits. You’re thankful that you don’t have to feel how big they’re getting with your hands, both of them being occupied with your cock, but you’ll have to deal with the consequences eventually.

With your legs, arms, and your body in its entirely shaking and pulsing with orgasmic bliss, you stroke and stroke and stroke. The weight on your chest grows heavier and heavier, much thicker nipples rubbing against your shirt as your breasts begin to actually make the shirt go from loose to tight. Simply praying that they don’t get too big, you moan loudly and uncontrollably, continuing to chase that dream of the greatest orgasm ever.

~[Perspective Change to Roommate]~

Hearing the slutty moaning coming from your roommate’s quarters, combined with the empty can of shortstack soda you left out, you’re left to assume that your plan has gone perfectly. You rush to your collection of other sodas you got at not the cheapest price ever, and look through them to see what you’ve got. A few aren’t quite suitable for your intents, such as ‘Bimbo Beverage’ or ‘Lecherous Lactation’, but amongst the dozens of different flavors, one catches your eye.

‘Catperson Cola’. You give the description a read, “This fizzy drink will give you the senses, and all of the cuddly parts, of a genuine feline. Guaranteed to come with adorable ears, a cute tail, catlike reflexes, catlike senses, and enhanced canines.” What catches your eyes the most is the whole catlike senses and reflexes part, which will be amazing to use with your new horny, shortstack roommate.

Making sure to read through everything, you see the potential side effects. “Heat cycle, Feminization, Enlarged Genitals, Production of Milk in Males and Females, Personality Changes, Carnivorous Desires, Sexuality Changes.” With the obligatory part to check with your doctor before consuming, which nobody does anyways, considering that these side effects listen on medications are always so rare especially when you have no complications.

You crack open the can, and drink up, ready to experience some new catlike powers. It’s a bit hard to chug the carbonated beverage, but after a few breaks, the lemon taste mixed with something else that you can’t quite put your tongue on is washed down. With your slower drinking pace, the changes manifest themselves gradually but quickly, immediately causing you to notice your enhanced sense of hearing. Mostly due to the fact that your roommate is moaning so loudly.

You’re not really able to complain, and in all honesty it’s making you a bit stuffy below the belt. Placing a finger across the top row of your teeth, you notice how long and sharp your canines have gotten, you think they look rather sexy, but the drink isn’t done quite yet. You find yourself pushing your butt out in response to a pressure building up from somewhere between the bottom of your spine to the top of your ass. “Ouughh… ahhhhh” You let out a sigh of relief, the pressure subsiding as a thin, brown tail extends from the spot. It whips around, seemingly out of your control, but you don’t really mind it.

Somehow, the drink has even managed to make your clothes change, signaling that something might be going a bit wrong. At the same time, your human ears are replaced with a pair of fuzzy, brown cat ears, matching the rest of your hair, except for the bit of fuzz inside of them. A gap forms between your shirt and pants, only growing larger as it’s soon revealed that your underwear has been taken from you.

Left in only a shrinking shirt, hoodie in pants, you panic a little bit, frozen in place as they keep getting shorter. With your belly and crotch area completely exposed, your clothing ceases its shortening, and instead begins to reform. What once were pants become a pair of thigh high socks, striped orange and pink, matching your now crop top hoodie. Your undershirt is still black, but much tighter fitting.

“How in the world is a drink doing this?” You ask, your voice sounding like one of those stereotypical gay guy’s, but somehow even more feminine. “Aaaaaaahhhh… hello, hello, hello?” You say out loud, trying to reproduce your old voice and being completely unable. It’s just then when your exposed manhood begins to perk up, hormones and lust starting its conquest over your body and mind. The worst part being that not only thoughts of women are crossing your mind, but also men, could this be the side effects? But why you? You don’t have any other medications or health issues?

Your questions remain unanswered, and don’t do you any good as your messy hair lengthens, making its way down the sides of your head and neck before stopping at a point that perfectly frames your face. Speaking of your face, you whip out your phone to the camera, seeing a face that’s vaguely yours. Staring at it for a few seconds, you can’t help but appreciate how undeniably cute it is. It’s soft features, slightly pudgy, flushed cheeks, and those fangs just make you look even more adorable.

Your attention is brought to the throbbing rod, itching to be touched between your legs. Looking around your room for a minute, you notice a fleshlight where the can used to be. Seeing your clothes, the can turning into that is a little less surprising, and you find your hand creeping towards it. Your slender, soft hand, clear of any roughness or imperfections. “There’s only more surprises, aren’t there…” You mutter, seeing that the in-end of the fleshlight looks like an actual mouth with glossy pink lips.

Imagining how good the inside feels if the outside looks like that, you press the lips over the tip of your rod, confirming how soft and plump they are. “Ouughh… fuuuckkk~” You moran, the girliness of said moan turning you on even moreso. Actually noticing how smooth your hand was when reaching for sex toy, you run another hand across the rest of your body, and the spots that would usually be hairy like your legs. Nothing, nothing except much more sensitive skin, shooting tingles up your spine just from your own touch.

The lips actually leave pink lipstick splotches on the tip, and you gently lower it to feel what the inside is like as it consumes your shaft, and your mind. “Sexuality changes… feminization… don’t tell me I’m gonna get male lactation… oh god…” You say to yourself, your worrisome thoughts stripped away by the enveloping, warm sensation of the fleshlight. You find your hand pumping and stroking without any conscious effort as your body grows warmer and warmer. “H~Heat cycle?” You stammer, becoming hornier than any one person should be.

You keep pumping and pumping, your cock throbbing harder and harder as you do. When you first started using it, you noticed that your member was a loose fit, but now it seems to fit perfectly. Genital growth isn’t something you can complain about, but it leads you to believe you’re going to experience all of the above side effects.

“Ughhh… fuck, fuck me, oh my gaawwddd!” You moan in that delicious, lusty, flamboyant voice. Pink lipstick marks cover your cock, the radiating pleasure taking the main stage while your shoulders crack inwards significantly, followed by the slimming of your chest and waist. Experiencing the opposite, your hips jut out just as much as your shoulders shrank, giving room for your thighs and butt to grow to fit.

The pleasure wracks your body so much, making your legs tremble so badly, that you’re sent to the floor squatting, using your remaining arm to support yourself. “C~Cum… cumming~” You coo, your hips thrusting back and forth as your seed is deposited into the fleshlight. The orgasm lasts what feels like forever, just load after load being pumped inside the toy, with none coming out. That probably explains why your thighs and butt are gaining so much mass, becoming thick and girlish to fit in with the rest of your girly frame and appearance.

If you noticed what was causing the growth of your rear, you’d probably stop cumming inside the toy, but with your dulled mind and the convenience of the fleshlight removing any cleanup post masturbation, you probably never will…

~[Back to MC]~

While all of that was happening, the lengthy process of growing tits and losing your cock continued. You start to notice that your hands are actually getting closer together, slowly, but surely. Your hands definitely aren’t getting any bigger, so that must mean the inevitable is coming. With your breasts already making the fabric of your shirt stretch and tear, you hope and pray that you’ll be able to cum soon.

“Please… please… let me, let me cuuuummm!” Shouting and pleading does you no good, your cock only continues to shrink as your breasts swell larger and more sensitive. Infinitely close to cumming, your stroking becomes more vigorous, eventually, and finally giving you that relief you’ve been trying to get this entire time.

With no toy to shoot your load into, your cum sprays all over your bed and body. At the same time, your tits take it upon themselves to grow faster than they were before, ripping themselves right out of your shirt just in time to get plenty of your cum all over them. They swell at no end, becoming huge enough to reach your belly button when you stand up, and before long, even cover it.

With so little of your cock left, your hands are basically grasping at straws. “No no no no, unghhhh, why did I do thatttt!” The post nut clarity is strong, but it’s too late now, with your cock and balls shrunken away into a puffy, breedable slit and your breasts bigger than any pornstars, your transformation is complete.

After cleaning yourself up, and getting your biggest, baggiest shirt on along with a pair of thigh highs that you had when you were doing a little experimenting, you hear some moans coming from your roommate’s room as well. They sound, girly… but not quite a girl’s. With your interest peaked, you make your way to his room and creak open the door. What you see shocks you, as you open up the door fully and simply stare.

“It was you, you did it on purpose, hmm?” You ask your roommate with the sex toy over his cock, a hyper feminized version of his past self, complete with all the fuzzy catboy bits. “W~Whuh? N…No I just forgot it there!” He stammers, lying straight through his teeth. His minifridge catches your eye, and you go over to inspect it, not having to lower yourself much to access its contents.

A fridge full of different sodas, and there you have it, the Shortstack Soda, along with many others. You take it out and look through the text on it, “It’s in the name! Become the short, and stacked, queen you’ve always wanted to be… yada yada yada.” You read aloud, but one part catches your eye. Some big disclaimer text about not drinking two of the same, otherwise it’ll be permanent.

The only other drink that catches your eye is the Catperson Cola, and you get an idea. Taking it out of the fridge, you approach your roommate with it. After your quick read over the can, it appears he’s experiencing quite a few side effects. “I’m sure you know what drinking two of the same drink does to you, don’t you?” You ask him, feeling a bit relieved yourself that this isn’t permanent.

“N~No, don’t… you can’t make me.” He replies, a pit appearing in his stomach while your own eyes light up. “Looks like your plan didn’t go too well, did it? A cute little catboy in heat, and look at those legs, so juicy~” You tease him, his face flustering bright red even through his darker skin. “It’s the side effects not me!” “Shhhhh.” You shush him, now close enough to put a finger up to his mouth. The only downside being that your tits are right over his cock.

After cracking open the Catboy Cola, you use your free hand to scratch beneath his chin. “Just be a good boy and open up, I’m sure this stuff is really yummy!” Your teasing increases to dangerous levels. You notice his ears twitching, and his tail whipping back and forth. “Mrrrrr… no! I wrrrrrrr~on’t!” He can’t even stop himself from purring, cute.

“Well, if that won’t work.” You say while holding up the can to his lips, moving your hand up to one of his ears. You itch the ear with your fingers, then place a thumb inside the fluff and rub around a bit. Almost immediately, his jaw opens, with his tongue sticking out, drooling like a dumb cat in heat. He’s still perfectly conscious, but his body can’t resist the pleasure of his ears being played with.

“Such a good boy, opening wide for me, I’m sure you’ll be a good boy forever and ever then!” It’s almost too much teasing for yourself, as you slowly pour the Catboy Cola into his mouth. The familiar taste hits his buds, and inspires dread in his soul with his fate about to be sealed. It fills his mouth, and when his mouth gets too full, his body instinctively swallows to allow him to breathe.

“It is very yummy, right? I’m sure it is, look at how fast your tail is going!” You continue pouring, nearly reaching the end of the can. “Make sure to get every drop, it’s very important to make you the cutest, healthiest boy you can be!” With the can emptied out, you wait for his body to consume all of the drink before you stop scratching his ear.

“Pwaahhhh… aahhhh… haaahhhhh~” He catches his breath, and continues to breathe heavily afterwards. “How could you? N~Nyooo!” The catspeak is already signaling the permanency of his changes. “My body is ruined! Look at my legs, they’re syo… syo, fat!” He complains, clutching their squishiness in his delicate hands. “And how will I ever be able to wear pants again, my cock is so fucking huge! I’ve always been a shower, and now… and now… it’s gonna be even wrose!”

“Enough complaining, I think you mean your body is super duper cute!” He flushes again, flustered so so easily. “Look at your face, you know it’s true!” You’re not quite sure where this confidence came from, but it feels amazing. “O~Only a little… Nyan~... But I dyon’t want this body forever!” He complains even more. “How do I explain this to my friends, my family?” “Well for your friends, I’m sure you could fix that by making them boyfriends, and your family, you’re just too adorable to say no to!”

“Now, that was a little mean forcing you to drink that, but I’ll make it up to you. You feel really, really hot, could that be your heat cycle?” You ask, taking your shirt off nice and slow to reveal your massive breasts, flopping them over his cock. He doesn’t make much of a response, only covering his face to hide how flustered he is. “With your cock still throbbing and dripping, I’ll take it as you are on your heat cycle. Well, since I’ll turn back in about twelve hours, I might as well make use of this body.”

You straddle him on the floor, placing your legs on both sides of his body, placing your pussy directly over the tip of his pink lipstick stained cock. “I’m sure that toy was amazing, but this is about to be so much better~” You coo, bringing him to take his hands away from his face in order to look. “B~But if you get came inside, you wyon’t turn back!” “Nice trope, the can said exclusively through a second can. Otherwise they’ll make you your very own flavor to turn back to your own self, that’d cost millions normally.”

“Nyuh… nyuh uh!” He stammers out, such a silly response earning him a deep plunge into your pussy. “Ooohhh… holy fuck you’re big~” You coo, your vaginal walls getting stretched out by his massive shaft, a cock too big for your little body. Luckily for you, this body is built for huge cocks despite its size. “I~I knyow!” He responds, his face as red as ever. “I’m pretty big too, my tits slap against your chest when I go all the way down, that might hurt a little bit for the both of us, it’ll probably be better if you play with them instead. Just look at my hard, thick, nipples!”

You squat with his dick all the way inside your pussy for a few moments, waiting for him to do anything. “Just grope my tits already you idiot, I only get to experience this for a few hours and I’m probably not gonna do it again.” You command, to which he finally lays his hands upon your monstrous breasts. Your own face flushes red when he begins to play with your nipples, nipples and areolas so big that it takes his whole hand to cover all of your sensitive pink flesh. The rush of pleasure makes your slit gush,  your fluids leaking all over his crotch as you sit there, stunned.

“Ahhgg, shit, you got me good. K~Keep doing that, now, to fulfill my part of the promise.” You say, unsheathing his cock from your warm, tight hole. “I mean… at least I’m not stuck with thes~aaaayeeehh~” He’s interrupted by a moan as you start to actually ride him, bouncing up and down as you watch him go from flustered to a horny, drooling mess.

His heat gets the best of him eventually, telling him that he needs to breed. He musters the little strength he has to switch positions on you, flipping you onto your back and pinning you into a mating press. Luckily, your legs are flexible enough, but you’re not sure if your pussy can take the ultimate breeding technique. “I don’t care if you’ll turn back, get pregnant you busty whore!” He exclaims, the surge of strength extending to his personality as well.

“Wait, wait wait wait, I dunno if I can do this!” You plead, getting no mercy from him as he plunges his shaft into you like a jackhammer, slamming in and out and in and out. “Nghhhh… I’m gonna… I’m gonna break! You’re gonna break my pussy!” You cry out, feeling him somehow reach deeper and deeper with every thrust.

His hips slap against your meaty, sensitive ass, enhancing the pleasure even further as your tits jiggle around completely out of control. You always thought that ahegao face was stupid, but you find yourself making that slutty face naturally with how much bliss you’re experiencing. With your tongue out, and your eyes crossed, the only thing your mind can focus on is the cock pounding your womb over and over.

Losing lucidity, you’re not sure whether 5 minutes have passed or 5 hours, but it at least seems to be coming to an end as his cock begins to throb harder than ever, his strokes becoming slower and sensual. Slower and slower, until they stop, a warm liquid fills up your insides rapidly when they do. “Take it, take all of my seed, you piece of breeding meat!” He’s a little scary, but it’s also incredibly hot forcing your pussy to bulge with his seed.

There’s so much of it that it all starts to flood out from your crotch with no room left. Your roommate notices, and removes his cock from your pussy, finally allowing your legs to go back to normal. You let out a sigh of relief, but your mouth being open allows him to shove his cock inside, pinning your head to the floor as he now fills your throat with cum. There’s a lot more room in your stomach as you gulp down load after load, none of it leaking out with how perfectly his shaft fits in your mouth.

Somehow, you’re able to keep gulping more and more down, you even notice your stomach bulging just a bit, sloshing with his musky liquid. He finally pulls out after he’s probably made you a few pounds heavier with his seed, but somehow you still don’t feel full despite your full belly. “Oooh, oh shit? Wha… what happened? Why are you, no, wait… that wasn’t all a dream?” He seems to be suffering from a similar post nut clarity you were. When he gets his signature flushed face back, you can tell he’s gone back to normal, well, as normal as he can be.

You end up milking him of his sperm for a while longer, practically the whole day actually. You wondered about all the cum you swallowed, but it turns out when you turned back, it all just sorta went away, as if your body from when you first drank the soda was simply restored.  As expected with your roommate though, you got to watch him panic as his body failed to turn back to normal. His heat cycle came back rather quickly, and with his altered sexuality, he ended up teasing you with his ass that no man should have.

You considered yourself straight before, but after indulging in the pleasures of femboy flesh, you may have changed your mind on that fact. You also made sure he came into the fleshlight until he became your desired thickness. You find out that that part wears off, slowly, but still, in about a week, one massive load of his cum in the toy converted to ass and thigh thickness fades.

You often find yourself threatening to force him to cum inside it, making him ridiculously thick. As a cherry on top, his thickness does cap out, but instead makes his rear even more sensitive. Once, as a punishment for trying to slip the Bimbo Beverage to you, you made him cum so much inside the toy that just groping his ass made him cum. It was funny and hot watching him just sit down and cumming his brains out for days straight, and you were right too, his friends either wanted to fuck him outwardly, or denied themselves for the sake of maintaining their heterosexuality.

Whenever he needed to visit his family, you planned well in advance to make him not ridiculously thick, and instead cute. They questioned how it happened, but you always threatened another week of straight cumming if he ever told, and that’s how it’s been ever since. Your very own catfemboyfriend. A mouthful, but you love every second of it.