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**DOUBLE DOSE

by Dirtyraptors**

_"hey should i invite morgan and courtney to hang out?"

"sure babe the more the merrier~"_

Jessie glanced at the response to the message he had just got from his girlfriend Jas, inviting him to come over and hang out at her place for the afternoon. On his way, he had offered to pick up a pair of friends from work, figuring they could have a few drinks and order dinner, maybe a watch a movie or play some board games.

Jas had a nice place with plenty of room for them all, and he quickly texted and made arrangements to pick them up. A short while later, he pulled up in his car with his buddies and sent another text to Jas to let her know they had arrived.

"hurry up lol" she sent back, and Jessie brought them all the front door, unlocked for them as he opened it and led them inside. It was too late to notice anything was wrong in the darkening evening light until they had all stepped inside, as a suddenly overpowering wave of stench and musk plowed into their noses!

Reeking magnificently, it was truly the stink of a filthy wild animal, and Jessie couldn't help but wonder for a moment at what sort of horrible creature from the jungle was lying in wait in his girlfriend's living room. The three guys all groaned as the door had just closed behind them, coughing and blinking at the sheer wall of stench.

Morgan turning to look back for a moment and thinking about stepping out again until his hand hesitated, another breath of the noxious smell filling his nose and mouth, making him feel disgusting and violated and yet somehow... wanting to sniff it again, even as he winced and tried to huff it out, yet a second later he was drinking in more through his nostrils.

It was happening to all of them, combined looks of dismay while they each tried not to think about the stench overwhelming their senses, trying not to keep snorting it in...

Jessie called out, holding a hand over his nose. "Jas, what's going on? What's that smell?!"

Emerging from the stained and filthy cesspool that was the living room, a figure suddenly appeared in front of him, a sight so shocking and unexpected, it made them forget for a second even the ungodly fumes of stink filling the house.

"Guess what!" A growling voice came from the creature's hyena-like muzzle, causing the three guys to gasp and press back in astonishment. Jessie's head was swimming; he was sure he recognized the voice as his girlfriend's, but deeper and more... hungry. This had to be some kind of crazy dream, but dreams didn't usually smell this terrible!

"Jas - ! What's happening? W-why do you look like..." his mouth struggled to even come up with the words to describe her body. She was taller, that was for sure, and it was hard to even make out more details on her figure, covered in dirty brown fur absolutely smeared and caked with streaks of reeking brown shit. A set of toothy hyena jaws grinned at him from under the muck, as his attention was diverted to just how outrageous her figure had become.

Under the mess, he could see that her formerly modest boobs had erupted into nasty titanic knockers, even her nipples swelled obscenely long and turgid in the shape of dripping dicks.

Topping it all was the simply mammoth cock that stood up stiff in front of him, almost at eye level, swinging around, leaking cum on the ground and slapping up against her huge tits. Holy shit, it was bigger and thicker than a baseball bat!

The sloppy brown filth was smeared into her fur from head to toes, including that absurdly oversized cock, the smell more like a physical force, reacting with his very nerves and most basic of instinctive needs. A heated rush tingled through his nerves and into his groin, a swirl of boiling lust making his cock throb within his pants.

"My hormones came with a little bonus this month! Seems like they're testing a new system, and I gotta say the results are... impressive," a wolf-like grin showed her toothy jaws as she stepped closer. Jessie blinked again, desperately trying to ask the cascade of questions racing in his mind, but she had four arms and two of them were taking hold of his head and shoulders, and pushing his mouth down on the filthy, flared and drooling head of her cock.

"Here, you two are gonna need these," with her other pair of arms, she tossed a pair of padded XL diapers to Courtney and Morgan. The two of them were feeling more horny by the second. This seemed so utterly wrong and perverted, surely any sane person would run out the door...

And yet, all his instincts now craved to be treated as a plaything for the god-like figure as Morgan groaned softly, holding the diaper in one hand, the other pressing down to his stomach. He felt a twisting, churning heaviness within his bowels and moments later Courtney was feeling the same thing, staring in awe at the way that Jessie was so casually pushed down on that massive dick, his mouth stretching to gape open wide, gulping and sucking the fat horsecock that bulged his jaws as casually as a drink of water.

The three guys were all feeling the contagious side effects of the neurochemical Jas had inhaled from the mysterious gas mask that had arrived with her usual shipment of hormone pills, transforming her promptly into a ravenous, insatiable, multi-limbed and demi-sexual hyena.

Now it was changing them too, both in mind and body, feeling more utterly horny and debaucherous than they ever had in their lives, while they underwent a series of physical changes to match their host - light and dark grey-spotted fur sprouting over their bodies, bones and muscular framework cracking and extending. Their feet were shifting to a digitigrade stance, while they moaned and gasped simultaneously at their very faces stretching out into muzzles and snouts, bringing a deeply enhanced suite of senses: all the better to sniff in the delicious stink emanating from their progenitor.

Explosive chains of engineered proteins smashed into their DNA, reforging and maximizing every cell for strength, stamina, and sexual potency above all. Inhibitions melted away, dissolved in an ocean of feral lust that roiled from their newly hyenid instincts.

The idea of clothing seemed suddenly ludicrous as they tore away the shredded scraps off their bodies, marveling at the wondrous physique that they found below. Both of them hefted a set of big tits, rubbing and squeezing the achingly sensitive thick nipples they found with their new claw-digits. Their cocks had doubled - tripled! - in size, so much more plump and appealing in their new animal forms, the size and shape of a prized stallion and every bit as ragingly horny.

Even the definition of their gender had blurred in the sea of supercharged hormones that flooded their torrid bloodstreams; no longer just boys, as they would soon feel a new heat and needful clenching from behind their furry oversized ballsacks, a sloppy wet pussy and clit waiting for them each to deflower and desecrate.

Their focus seemed to surge in waves between the urgent and depraved desire to fuck each other immediately, to the sloshing and churning pressure of their bowels, as their bodies had rapidly metabolized the available nutrients in their stomachs and were now desperately ready to unload their bounty.

Panting and drooling like a pair of sexy, horny dogs, the naked Courtney and Morgan eagerly stepped into and pulled up the diapers so generously provided by Jas.

Jas herself was standing like a figure of worship in the shit-covered mudpit of a living room, her now-girlfriend Jessie on her knees guzzling Jas's mighty cock. The other new girls stepped forward, almost at the same time giving up the last bit of hesitation and simply letting their aching hot loads of shit explode into their diapers!

Giving into their filthy, shit-horny desires only made their girl-dicks throb and drool sticky precum in their diapers, sagging behind them with nice chunky bulges of their steaming logs inside. More and more of their messy poop splurted out to pile up and squish into their buttcracks, giving them an all new delighted feeling when it started to smush into their horny hyena pussies too!

Jas had enjoyed feeling Jessie's mouth and throat transforming around her cock, and it only felt right for her to guide her into this glorious new existence as she now murred in contentment, fucking Jessie's hungry new hyena gullet as thick hot cum pumped down to fill her eager girlfriend's stomach.

Standing on either side, Jas embraced and stroked the bodies of her new lovers Morgan and Courtney, smiling at how they had adapted to the changes and now only wished to share in her pleasure. Her paws pulled them forward as they were still whining and moaning with delicious-sounding farting and squelching noises of shit filling their diapers.

"Good girls," she gave their cute ears a scritch as they both dived in with open maws on her cock-nipples, sucking and slurping them, even testing out their new fangs to tease and tug the throbbing nipple-dongs. Jas used her lower set of arms to reach down behind the eager girls and give their diapers a squeeze, both of them moaning happily with the plump cocks filling their mouths, just as they both farted and dumped out a fresh new load of stinky shit that squished warmly against Jas's paws.

After cumming down her girlfriend's gullet, Jas pulled her still-spurting cock out of Jessie's maw and let a few more shots glop on her face, smiling as she beckoned with a claw for her to stand. "You're doing so good for me, Jess! I've got another surprise for you..."

While her mouth was still sticky with strings of Jas's bestial sperm, Jessie gazed into the rapturous eyes of her girlfriend as she was tilting her maw in for a horny kiss on the lips. Instead of a tongue though, it was more like a lewd and erect cock being stuffed into Jessie's mouth! She sucked on it delightedly, moaning and wagging her tail in happiness, practically creaming herself on the spot from the kinky mix of pleasures of both kissing and sucking cock, feeling it snake its way deep into her gullet, wanting only to pleasure her beautiful gorgeous girlfriend.

It made Jessie's heart pound even harder to feel the overwhelming pleasure and gratification of the bond that connected the four now. They were each treated to a full orgasm from the exotic, extenuous titty-cocks and tongue-dick, Jessie getting a big mouthful of hot sperm to guzzle down, while Morgan and Courtney both suckled hungrily, gulping down cum and happily letting it splatter over their faces, licking it off each other and laughing joyously. All while blatantly shitting and filling their diapers of course!

The stomach-churning effects were starting to hit Jessie hard as well. She didn't have the luxury of a diaper, but Jas soon grinned after throatfucking her, sliding her cocktongue from within Jessie's cum-drooling maw, a few sticky strings still dripping on her snout.

"I know you've been waiting, my love," she stroked Jessie's new hyenid ears, a lovely intimate pleasure all on its own, even as her stomach did feel desperately full, especially knowing her friends were getting to fill those diapers already.

"I'm going to let you shit on my cock while I pop your cherry!" Jas purred and Jessie blushed hard, even as her two friends wagged their tails excitedly.

"You nasty dogs are getting a treat too, now get behind me," Jas commanded, groping Jessie's ass while the other two crawled around below her tail just like a pair of hungry pups, both of them panting and sniffing the delightful treasure they found waiting for them - a twin pair of fat, raunchy donuts stacked within Jas's asscrack, both of them smeared and glistening with shit, the fat shitholes rippling open with a stereo blast of farts right into their noses!

Jessie had done anal with his girlfriend plenty of times before, but realizing that she now had a pussy that she was about to give up for the first time was a whole new intimate thrill, and fuck, her pussy was HORNY.

She would have already been furiously jerking her clit and fisting those plump canine lips by herself if not for the ministrations of her girlfriend, both of them reveling in the raw sexual energy and treating their animalistic new bodies like an absolute playground.

The sofa was nearby, already covered in steaming brown logs from Jas unloading earlier, and Jessie climbed ahead right into the nasty shitpiles, now on all fours with tail lifted high in front of Jas's raging cock. Jas grinned, getting a good look at her girlfriend's lovely cunt, wet and dripping with dark inviting lips, but not nearly well-used and filthy enough yet!

That would be fixed soon enough as she took a stance and held her battering ram of a cock steady, aiming into those plush and waiting pussy lips. There was nothing to hold her back, sharing in their crazed fervor as Jessie yelped and panted, Jas plowing through the resistance of her cunt for the first time, slamming it home without waiting another second!

All of them were equally horny for sex and shit, both urges still ramping up, and the pressure of Jas's cock penetrating Jessie's pussy for the first time was putting even more of a strain on her clenched and packed bowels. Nothing sacred left to hide, she finally let it all rip...

Moaning uncontrollably at the overwhelming pleasure of her pussy getting wrecked, a loud and sloppy blast of flatulence thundered from Jessie's asshole just above the cock that was pounding her cunt.

Jas laughed in delight, slapping those thick hyena cheeks as they bounced, dicking nice and deep in the sloppy wet cunt below. One of her four arms held that ass open to watch Jessie's pucker stretch and gape wonderfully, disgorging a beautiful fat brown log, nice and thick and creamy, smoothly pushing out from her pucker as Jas could feel the tension of those bowels even from within the lusciously warm pussy tunnel she was ravaging.

The two hungry scat-sluts kneeling and worshiping Jas's butt were treated to a reward of their own, as they had been busily sniffing and licking the double donuts back there, french kissing both those dirty puckers and each other, the twin tunnels gaped open and each dumped a log the size of a stallion cock right on the gal's faces. Both of them huffed and squealed in delight, feeling their muzzles buried together under the heavy weight of Jas's load, piling up on itself on top of their heads before they both opened their jaws and started to chow down.

The taboo push-and-pull of their feral instincts were greedy to fuck and eat shit, and the sheer forbidden raunchiness of chewing those logs together, licking them back and forth into each other's maws, rubbing the nasty mess on each other's tits, both their cocks throbbing in those messy diapers, was just making them jizz more strings of cum into the gloriously filthy mess of shit inside, moaning and laughing in between tongue-fucking the rich and creamy scat into each other's mouths.

By now, a new wave of dung was already blorting out of Jessie's ass, lubing up Jas's cock like a piston driving the malodorous mess into her pussy. Jessie felt her whole body shaking, so strong all she could do was scream and claw into the sofa cushions, shitting herself wildly and being fucked like an animal, her first cunt-orgasm like a typhoon of girlcum blissfully squirting from her pussy all over her girlfriend's dirty balls!

Jas growled in satisfaction, feeding the two hungry whores fresh from her ass, while making sweet love to her girlfriend, rubbing her own filthy tits and cocknipples with her top set of arms, letting them spurt more cum on Jessie's back. Then her own cock was pulsing too, those heavy swinging balls of hers dumping a fat load of their own, each shot inflating into Jessie's womb and giving her a wonderfully swollen tummy and the radiant glow of that fertile seed taking hold where it belongs.

Jas liked cumming where it didn't belong too, and watching her girlfriend shit on her cock while fucking her had given her a sudden inspiration.

"Oh fuck... Jas... I want more!" Jessie managed to groan out, meaning every word.

"Don't worry - I'm gonna take another hit and really give you sluts what you deserve!" Jas grinned with a near-demented predatory look on her face as she pulled out her filthy shit-smeared cock from Jessie's equally disgusting cunt. She turned around to the wreckage of her living room table where the special prototype mask she had received with her HRT was laying buried under piles of shit and fuck juices...

Not even bothering to clean it off, she pulled the canine-shaped gasmask over her head, towering above the three panting and hungry hyenid shit-lovers, Jessie happily snuggling with her friends as they all watched their mistress in awe.

She twisted a stainless steel cylinder into the front filter of the mask, as bright LED lights flashed in hazardous colors. She pressed the central activation button eagerly, a sense of ravenous destiny driving her to take her place as the most horny fucking creature on the planet!

A computerized voice spoke in her ears. "Dosage beyond maximum limits may not be reversible. Do you wish to proceed?"

"Fuck yes," she growled, taking as deep a breath as she could. The metallic tang of oxidizing chemicals bearing their load of spicy genetech rushed into her lungs. A distant warning beeped in her ears, unheeded, obsessed now to break her limits and maybe those of her companions as well...

She staggered for a moment, doubling over, the fiery surge of recombinant proteins cascading from her lungs to the rest of her cells. More crunching of bone and ligament as she expanded in both size and appendages. A third pair of arms stretched from her shoulders, her frame bulking up with even more muscle than before, a deep reverberating maniacal laughter coming from under the mask.

Jas had to actually pull the mask off as her face was getting too big to fit properly, her vast toothy jaws splayed open for her anaconda of a cock-tongue to loom above the girls kneeling before her.

She was getting too big for the room, cracking the ceiling with her unstoppable might, grinning wolfishly as she rolled to lay on her back in her own altar of filth, her huge footpaws smashing more walls and furniture into rubble.

The others were now barely half her size, looking like a set of filthy fuckdolls hugging each other and gazing up at her, towering over them even as she was sitting down. And that's just how she treated them - a pair of colossal muscular arms each taking hold of Morgan and Courtney, her titanic jaws of doom snapping forward... and biting into the overloaded, swollen and sagging diapers the two were still wearing!

Stinky hyena dung splattered over Jas's already filthy form as she chewed and guzzled each of their diapers, hyper-strengthened fangs shredding the fabric and easily gulping down the whole of the padding and the muck inside. They both squirmed, she was so strong, those huge feral teeth pulling off their diapers completely and swallowing them like an appetizer - the new transgirls both showing their appreciation by taking a double dump together in Jas's maw, thick sloppy hyena shit splattering down in those huge jaws as she chewed, swallowing it all again in a couple bites and laughing joyously.

Even while still transforming, she easily took hold of Jessie with one set of arms, lifting her effortlessly above her jaws while her little girlfriend yelped and squirmed - it took every ounce of trust and an overdose of lust-inducing hormones as Jessie was held above the ravenous beast, her sea serpent of a cock-tongue coiling out of her maw to surround Jessie's body. It was absolutely slathered in shit and sticky strings of sperm and had only one destination, plunging right into Jessie's donut, gaping her ass wider than that of any mortal cock on the earth!

Jessie whimpered, her anus getting destroyed by the monstrous dick-tongue filling her ass like a freight train, already on the edge of cumming harder than she ever had in her life, even as she was held like a toy above Jas's devilish maw, facing down her body to see the fate of her friends unfold.

A second set of huge tits had grown in on Jas's bosom, all four breasts crowned with a pillar-like horse cock jutting up in the air, leaking globs of precum constantly or spurting up to the ceiling. All while using her tongue to fuck Jessie's ass, her taloned paws held the other two girls above those cock-nipples, the friends sharing a glance of awe and excitement before they were brought down to each have their ass and pussy penetrated by a stallion-sized nipple-penis!

It was an almost Lovecraftian experience, their minds and bodies alike twisted to serve a godlike figure of unfathomable majesty and corrupt volition. Their very consciousnesses seemed to be melding and flowing together amidstthe sheer tidal forces of raw sexual stimulation, or maybe they were just tripping from the drugs....

While her ass was getting absolutely reamed, Jessie also had the pleasure of watching the transformation continue downstairs. Jas already had one massive cock, currently growing even more obscenely huge even for her ludicrous proportions, about to bump into Jessie's snout; just as a second, equally-ridiculous dick was growing to match the first, her nutsack swelling and multiplying to fuel those titanic shafts.

Jessie both felt and heard the depraved laughter of her girlfriend rippling through the cock-tongue stuffed four feet up her ass, all of them cumming on each other over and over through it all, watching her friends bloat and slosh, filling up like living condoms from the massive nipple-dicks in both their holes.

Jessie's field of vision was overwhelmed by the gargantuan twin cocks that were now pulsing and drooling right up in her face, smearing into her fur and against her cold wet hyena nose, doing her best to lick and suck the overeager, disproportionately disgusting dicks, each one now bigger than her whole fucking body!

It was like trying to suck a pair of meat torpedoes and she was literally pinned between the massive flared cockheads and Jas's insatiable dick-tongue, completely boring through the plentiful hyena shit deep in her bowels and beyond, feeling it bulge and stretch within her stomach, pumping it full of animal sperm just like the fat dicks in her face were starting to churn their noxious seed into her gullet, each one injecting cum by the gallon from both sides.

Jas used her paws to stuff as much of the enormous shafts into her distended jaws as she could, sucking them until waves of cum gushed down her throat and spurted back out her nose, her stomach bulging heavily, sloshing and swaying as she was fucking back and forth between the cocks in her mouth and the incredibly large and lewd cock-tongue churning her bowels like a tunneling machine.

"That was just a taste you little cum-sacks, now it's time for the main course!" Jas growled in her deepened, nearly demonic voice. She smirked at her girl-toys, the trio so bloated and their holes utterly wrecked and gaping wide open, pulling them off her cock-nipples with a flood of churned-up hyena shit and cum gushing from their aching bowels, sliding her tongue free of Jessie's equally wide gaping asshole.

Back on the floor, the trio snuggled together, each of them feeling the wonderful soreness of their gaping shitholes, as the bestial Jas rolled over, arching her back onto all fours with her enormous ass displayed in its full glory. At her huge new size they were right at eye level with the hypnotic arrangement of her orifices.

Her ass now proudly showed off a set of three anuses in a triangle formation, each of the black puckered donuts as big as any one of the girl's heads. Just below, two fat hyena pussies with lewd protruding clits drooled to the floor, the reeking mix of those assholes and pure feral sex filling the air in a cloud of intoxicants.

With the three girls hugging each other, their cocks were all sticking up together to match those triple assholes. Jas grinned as she looked back over her shoulder, squatting down toward the three cocks as they braced together, each one squishing inside and engulfed by the matching shithole above. They all moaned at how incredibly strong she was, absolutely milking their turgid equine cocks, rewarding them with an endless flood of steaming hot, mind-blowing stinky and noxious waste tunneling out around each of their dicks.

Her shit was plopping to the floor and covering their bodies, each of their paws smearing it on themselves and each other, reveling in raunchy anal pleasures of every kind!

Jessie was fucking the hole up top while Morgan and Courtney were humping the two filthy puckers below, Jas squatting back and riding them all, jerking off her cock-tits with four arms and her own giant dongs with the other two.

Soon Jessie rubbed one of her paws along the filthy surface of her cock while still pounding it into Jas's massive anus, grinning as she found she could shove his paw in her hole easily along side her cock, masturbating inside her colon while ass-fucking her at the same time!

The other girls were soon doing the same, both fisting and fucking their respective shitters - that still left them each a paw free to jerk off the glorious shit-smeared clits that were throbbing from within those fat wet hyena double cunts, a wonderfully thick hairy bushy layer of fuzz for them to play in as well covering those sloppy feral vaginas.

Soon they were fully fisting their entire arms into her quivering cunts, soaking into a complete pool of juices and shit around their footpaws on the floor as all of them howled and shared a chain of orgasms to fill their mistress's filthy bowels.

"Stay right there," Jas smirked, hearing them all moan as she squatted upward again to pull herself off of all three cocks. The girls looked so cute hugging each like that, she couldn't resist perking up her tail once again and pushing back with her ass one more time - this time a little higher, reaching her extra-long arms back to hold them in place.

All of them just moaning louder as each of their faces were directly pressed against her giant-sized puckers, absolutely the most raunchy and noxious smell any of them had ever imagined, enough to make any normal person faint but they were just getting even more high and horny on those titanic ass-fumes...

Pressing her weight further, she huffed and licked her lips, feeling them squirm as each of the girls' muzzles, snouts and then their entire heads popped inside of her assholes!

It was such a wonderfully delicious kinky sensation to have each of them so intimately trapped within her sphincters, followed by another squeeze that rolled the solid wall of shit just inside her triple-barreled colons toward their maws, squishing smoothly and inexorably against each of their faces.

Through it all, the horny sluts were fisting each other and wanking their cocks, huffing in the pure rancid fumes of hyena scat, their mouths open to let the hot and fudgy brown waste squish inside, clogging their gullets to serve as just another tube in her digestive system.

Trying to swallow her gigantic logs was like trying to deepthroat a tree trunk, but they were all making their best efforts, gulping down entire mouthfuls of the richly dense and perfectly compressed massive turds, somehow horribly disgusting yet their insatiable animal instincts found it to be more delicious than the sweetest chocolate, such a rich and decadent texture they couldn't stop shoveling it down their throats!

The sheer stink and heavy weight of all that shit was bulging their tummies against their raging hard cocks, spurting more and more cum into the flooding mountain of shit that was pouring over their bodies, squishing around their heads and out her holes, piling together on top of them all to bring them even closer to a unified collective of horny hyena shit-whores.

They were getting filled just as much inside as out, all three of them shitting to contribute to the rampant gushing flood of shit worthy of a broken sewer main, filling the entire floor of the house up to their knees and higher...

Barely able to breathe and absolutely tripping on pure ass gas, they were all jerking off Jas's hyena clits as the shit piled up as high as her pussies, fisting their arms right inside the cavernous, sticky wet cunt-tunnels - finding themselves to be fisting yet another wall of shit engulfing their arms, as she was shitting from both of her wombs as well!

All of them were tripping balls in the darkness of her assholes, yet feeling such a vibrant sense of belonging and connection that they could imagine being nowhere else. They were all being fed a second dose of the recombinant drug as well through the swollen bellies of shit from their goddess, as Jessie found herself growing a second pair of arms to help fist both her friends, as well as fisting both original arms up alongside her bulging neck and maw within Jas's bowels, helping to dredge even more scat down her gullet.

A second cock was sprouting from her crotch as well, already being groped and rubbed with fertile hyena shit by her friends, as they too were sprouting extra appendages, generously shoving them up each other's multiplying cunts and anuses!

The foursome was turning into an Escher portrait of shit-splattered cocks, orifices, limbs and cum, the whole house already a disaster site, and surely the walls and foundations wouldn't last long at this rate. No reason not to show off to the world - Jas's laughter echoing through the neighbourhood as her mammoth double cocks throbbed and humped like battering rams from hell, putting a hole through the wall each time, spurting her cum into the yard, windows shattering, wood beams and drywall crumbling around them, only making her more voracious to test her depraved powers.

Minutes later, the whole building was nothing more than a rancid pit of toxic fumes and spreading waste, contaminating the air and ground. They were on full show to the public in the corroded, polluted ground zero - the contagious fumes spreading on the wind to the surrounding homes. Ready or not, Jas was about to be unleashed!