"Come on! We're gonna be late!" A man called out to the six conjoined girls from the driver seat of a minivan. His frizzy blonde hair and brown eyes identified him as a relative of Abigail's, her brother Mark as Jen and Claire would eventually learn. Abigail slid open the van' side door and the sextet squeezed in. Even with the middle seats removed Maeve had to spread her six foot long legs out to both doors and her butt took up almost the entire three-wide seat. The five-headed cock torso stuck straight out past the front seats, luckily a pair of holes had been made for Jen and Claire's lamia-tail bodies, letting them lean over the back seat from the trunk.
As Mark drove Jen and Claire learned that they were going to a get together between the families of of their four body mates. They also learned the names of the two other girls that made up Maeve's cock: Irma on the left and Aviana on the right. The trip was about an hour and a half long, going all the way out of town to a seaside plaza where their relatives were already hanging out. Spread across a few blankets were: Maeve's mom, dad and twin sisters; Abigail's mom; Irma's two mothers; and Aviana's mom and dad.
Now that the guests of honour had arrived the food that each family had brought was pulled out, creating a perfect opportunity for Jen and Claire to slip pills to everyone. Before they got a chance to begin however, the final guests arrived: Jen and Claire's parents, carrying the bagfuls of pills they had bought from Diana's shop in their two, eight foot long, elephant trunk shaped cocks. Their long, whale flipper tipped snake tail flitted back and forth as they approached on their two sets of opposite facing bird taloned horse legs. Attached to their tail just behind their legs was a pair of yoga-ball sized breast-balls dragging along the ground, the stimulation causing both their trunk-cocks and the three-foot, tusk-like horsecocks that flanked their crotch to slowly trickle precum onto the grass. Their four leathery wings were held out to maintain the balance of their awkward body. Between their wings a pair of D-cup breasts bounced freely, looking almost comically normal on the rest of their body. A short length of snake-torso separated their wings from the massive cobra head that capped off their body, a snake snout with the nostrils and eyes of what were at one point Jen and Claire's fathers on both the upper and lower jaws while the massive hood held the eyes of both their mothers, surrounded by patterns resembling makeup.
""Hey everyone!" The twofold voice of Jen and Claire's moms greeted everyone. Most of the guests were confused at the strange mutant's presence, but Abigail's mom recognized their voice.
"Elisabeth?! Ashlie?! Is that you?"
"Yes! Our lovely daughters made pills that can mutate people who swallow them. We separated into normal humans when we took one this morning but decided to come back together when we stopped by the store selling them. We're planning on taking more to try to get back to our normal size, but all of you are welcome to have some as well!"
The other guests crowded around the fused mutant, no one willing to be the first to partake despite all of them clearly being curious. It was Frey, Maeve's father, that at last took a pill out of the bag. The man rolled the simple, white pill around between his fingers before popping it in his mouth and washing it down with a sip of the soda he was drinking before Jen and Claire's parents showed up.
Small dots of rust red began to appear up Frey’s arm, going all the way to his shoulder. These dots pushed out into a forest of feathers, covering his arms as they morphed into massive bird wings. The feathers on the lower half of his wings were a brighter shade of red, a colour shared by the tail feathers that emerged from over the waistline of his jeans. These jeans were quickly stretched out as his behind grew, tearing through the tough denim as his hips flared out past his shoulders. As his butt grew his beer belly flattened out into firm abs and his shoulders narrowed. His white T-shirt fell down down cover his bare thighs as his pear shaped body shrunk over a foot to a cute four-foot-eight. His brown hair faded into the rust colour of his feathers as it grew down to his neck. His shoes were torn asunder as his beet turned into three-toed bird talons covered in scaly skin up to his knees. The final changes were his cock surging up to slap against his chest as a slit formed behind his balls, themselves now the size of grapefruit. As his changes concluded, the herm femboy harpy reached over to stroke his cock, but his handless wing-arms could only teasing rub against his shaft, and had no hope of pleasuring his new vagina. Unfortunately none of the people around were willing to help Frey with his lust, as now that he had demonstrated the pills everyone crowded around the bags to grab pills of their own.
The next to swallow a pill was Aviana's mother Madeleine. Her transformation at first rhymed that of the man ineffectually rubbing his cock nearby as her legs transformed into scaly bird talons, though hers were a deep blue. Instead of the transformation stopping at her knees however it continued up past them as short and thick feathers of a similar shade covered her thighs. As the changes reached her hips they internally separated into two pieces, one staying where it was while the other stretched out into a rounded torso. The lower hips grew a long feathered tail that had dark feathers on its bottom and lighter blue ones on its top. Her anus fused with her vagina and became a massive cloaca beneath her tail-feathers, before splitting into two side-by-side. Her skirt, which had survived up until now, was torn apart when the upper hips became shoulders and sprouted a pair of massive wings that folded themselves against the woman's lower body, now completely that of a massive feral bird. The feathers stopped right where her stomach met the shoulders of her lower body, but one last set of changes manifested on her upper body: her tits, already nicely sized C-cups, grew to the size of beach balls; a second pair grew in below them just above her navel; and all four breasts had their nipples replaced with puffy vaginal lips. A pressure began to build in her lower abdomen and all four of her breasts, and she found herself squatting down and instinctively clenching muscles that she didn’t have a minute ago. She felt each of her six holes spread open one at a time to deposit a soccer ball sized egg on the ground, sending her body into a rapturous sextuple orgasm. As she was still cumming, more eggs began to build up in her six wombs and push out of her, prolonging her orgasm.
As Madeleine slowly piled up eggs around her, Mark split a pill and handed the other half to his mother, Aletha. The older woman eagerly accepted the offered pill. Both of them were drawn together, with the mother climbing atop her son’s rapidly growing body and absorbed his head with her torso. Mark’s clothes tore off of him, revealing a covering of dark teal scales spreading across his body, with light tan scales growing down the front of his torso. His muscles bulged out, his arms and legs thick as tree-trunks and a V-shaped bodybuilder torso with abs you could grate cheese on. Just above his toned behind sprouted a tail, one that grew to match his fifteen foot tall body—not including his mother's upper torso—before its tip formed a draconic head. Scales covered his nutsack as it grew down to his knees while the tapering tip of his cock rose upwards, leaving scaly ridges along its length. Meanwhile, on his shoulders, his mother’s legs moved to his back and grew into a pair of wings, their ten yard wingspan casting a shadow over the other guests. As if defying the icon of masculinity growing below her waist, her breasts surged outward. Her bra fought desperately against the strain, the hook on the back digging into her skin. Ultimately the force of her transformation proved stronger and a sharp *ting* signalled her bra’s failure. her blouse proved unwilling to fight nearly as hard and buttons were sent flying through the air as not one, not two, but three pairs of breasts burst out of it. Each of the six orbs was more massive than the torso that held them. She could feel that even her son's massive body was encumbered by their size. A desire to pay her son back for the effort he must now exert to carry her filled her mind, with the means to do so also making itself known when his throbbing erection began to press into her lowest set of cleavage. As his draconic member pressed itself into her canyon of titflesh she desperately tried to use her arms to give him a proper boobjob, but her pair of regular arms were far too weak to move even one of her titanic tits. As if responding to her wishes, another pair of arms grew from her waist. Of course just two more arms were hardly enough to move the incredible wight of her bust so these two were quickly joined by more. All down her torso arms sprouted and joined the effort to titfuck the cock that was now speared through all three layers of boobage. In total it took the might of eighteen pairs of arms, six for each breast, before she could properly fuck her sons cock. She worked the shaft thoroughly, using the fact she felt her own ministrations through their connection to quickly maximize both her and her son's pleasure. Her efforts were rewarded when she felt her suns balls tighten up, its first load visible as it was pumped up all seventeen feet of cock. She cried with joy when she felt the bulge of her sun's cum spread her breasts apart before spraying her in a warm shower of love.
Maeve's mother saw how sexy the fusion between Aletha and her son was and decided she wanted to fuse with someone herself. She spotted Adele and Rosa, Irma's lesbian mothers. off to the side with a pill and asked if she could join them. The three women had been friends since high-school so the couple had no qualms about letting Maeve's mother share the pill with them. Learning from the previous takers the three women stripped nude before they swallow their thirds, not that their clothes would do them any good in their new forms.
As soon as she swallowed her piece Maeve's mother—who’s name was Muirne—felt a similar compulsion to what Abigail's mother had, getting her into the proper place to join with her future bodymates. she was turned to face the backs of the lovers, who were standing side by side as their legs melded together. She was compelled to dive headfirst into the indistinct mass of their merging hips, wrapping her arms around their body as she added her mass to theirs. For a moment she was rendered blind and deaf. No signals entered her brain save those of her nervous system connecting to Adele and Rosa. She felt as their hands explored each others bodies; a palm brushing against a stomach, a stomach being caressed by a palm; fingers pinching nipples, a nipple pleasurably squeezed between two fingers. She felt both sides of every sensation the spouses experienced, even the kiss of love they shared. A love that she was now becoming a part of.
Muirne’s face at last emerged from inside her friends hips. It felt strange however, flatter and rounder than before and she was unable to turn her neck at all. Unfortunately she was unable to examine herself in any detail due to the fact that her arms had, alongside the couples legs, been fused into the pair of limbs that sat on either side of her. They were a bit hard to see from her perspective—especially since whatever her face was on seemed to be extending further away from their crotch—but luckily she was in control of them and carefully lifted one up to look at it. The limb was thick, covered in thin fur just a shade or two darker than the skin beneath it, and ended in a massive equine hoof. A couple stomps of what were originally her own legs confirmed to her that they had similarly changed into the rear legs of a horse. Logically This led her to believe that Adele and Rosa had become some kind of centaur with her becoming their lower body, but something about that didn't quite connect with how she felt. For one thing her face was still growing away from the rest of their body (closing in on the two foot mark) and she was also fairly certain that horses didn’t have torsos quite as cylindrical as hers felt. She wasn't able to consider the matter for long however as the aphrodisiac effect of the pills began to cloud her thoughts.
Muirne’s felt a roundish sack begin to grow between her back legs. Each time it throbbed larger a surge of pressure lanced through her body and shed felt something pound against the inside of her torso. this pounding started just in front of her hind legs at first but each throb sent it further up her body. It was only moments before this pounding reached her mouth that she realized exactly what was happening and what the now massive sack throbbing against her ankles was: The balls of the giant horsecock that her body now was. A geyser of cum erupted from her mouth. Each of her mighty loads travelled from the testicles hanging below her equine rear end, through the cock base as thick as an oil drum that made up the trio's tauric body, past the forelegs that sat a foot behind the medial ring, and then through nearly four more feet of mottled horsecock before reaching the flared head where her eyes sat just above the urethra her mouth had hybridized with.
After her orgasm ended Muirne felt the portion of her body the extended past her forelegs soften. This allowed her to flex her “neck” much more freely and let her see what had happened to her bodymates. While everything below their waists had been fused into her forelegs their upper torsos remained separate from each other, with each of them having changed in different ways. On the left Rosa had grown an udder that dominated her entire stomach, upon which rested two breasts like half deflated beach balls. The four teats on her udder, as well as both of her fist-sized nipples, leaked a constant stream of milk that tickled Muirne’s sensitive shaft. Adele meanwhile now had grown a third breast right between her normal pair, with all three nipples having transformed into thick lipped mouths with seven inch cock-tongues hanging half out of them. The lips on her face had similarly puffed up but instead of becoming a cock her tongue had split in two and grown several feet long and were currently lapping at the milk pooling on her wife's udder.
While the new cock-taur explored their strange body, Maeve's sisters—Eithne and Treasa—each took a pill of their own. The two identical twins watched each other as their changes began, both intrigued and a bit conflicted as they transformed in similar but opposite ways. Eithne found her upper body begin to melt away into her hips while Treasa had her lower body shrink away and leave her as a torso sitting on the ground.
As her head was being absorbed into her hips Eithne simultaneously felt a sensitive shaft push out of her crotch. Her consciousness began to stream into this shaft as it pulsed larger and larger. Each throb rattled her mind, like a headache were the pain was replaced with intense sexual pleasure, as her growing cock formed itself. Her lust grew and grew until at last an orgasm rocked her body, cum erupting from the two foot cock that now stood between her legs. As her cum was pumped out of her watermelon sized ball-sack however, her consciousness flowed down to replace it. Her mind melded with the sack of skin, pulled taught by the huge testicles it contained, and her face at last re-emerged on it’s front. With her senses at last returned to her she twisted to look past the flaccid shaft covering her face to see her sister’s completed form. Treasa had had her head transformed into a cock of a similar size to Eithne, her face sticking out from the foreskin wrapped around it’s end. Her breasts had also grown to the size of medicine balls and fused together into what was unmistakably a ball-sack. The ground between the sisters was covered in their mixed cum—a fact that didn’t stop Eithne from walking over to Treasa and kneeling down to allow her sister to climb atop her hips. The pair found their their bodies fit together near seamlessly. This allowed them the freedom to move around without worrying about Treasa falling off, despite the fact their was nothing holding them directly together.
As the sisters got used to acting as one Thomas, Aviana's father, popped his own pill, failing to strip first in his excitement. He immediately realized his mistake when his clothes, a simple black T-shirt and cargo shorts, began to squeeze his body. In an attempt to save them he desperately reached down to throw of his shirt, but found no space between it and his skin. He found similar results when he tried to slip his hands beneath his waistband as well as when he checked his sleeves and pant-legs. Unable to remove them, his clothes continued to tighten around his body. The pressure built until it at last was released suddenly. Unlike with the others however this release wasn’t caused by the clothes being torn by massive, inhuman anatomy but by his clothes fusing with his skin. Before he could even begin to work through the sensations of having the fabric of his shirt, shorts, and boxers (or even think about how or why the latter two were still separate) he felt an intense force pulling his arms inward. As his two limbs vanished beneath his cotton sleeves the shirt began to repurpose the absorbed mass. The sleeves fluffed out with puffy frills and it’s hem stretched downward as the garment went from shirt, to tunic, to dress, to gown. This garb, a poofy, frilly and bright pink one-piece dress that looked straight out of an old animated movie about princesses and Thomas could feel every inch of it as if it was his own skin. Well it would look at home in one of those, were it not for the deep V-neck and complete lack of back that would surely show of plenty of whoever wore its skin but at the moment only showed and empty void where his torso once was. Soon the pulling sensation returned, this time affecting his legs. He scrambled over to one of the table cloths laid around the plaza, finding the idea of soiling his dress far more distressing that he would have normally. Luckily he managed to make it just before his legs were sucked into his shorts, his fabric skin feeling strange as it brushed against the cloth below him. He could feel his shorts and boxers shifting beneath the folds of his dress-body, feeling as they compressed and shifted as the three garments became his entire being save for his head. Of course it wasn’t long before the pulling sensation was felt in his neck and his head was at last absorbed into the clothing.
At first Thomas though he had simply lost all of his senses, forced to be nothing but sentient clothing, until he felt a pair of hands grab his shoulders of the gown and lift him off the ground. Light flooded back into his eyes as he stared at the flushed face of his wife, a quartet of eggs falling from her breast as she lifts him. The fact that she needs to raise her arms over her head for them to be face-to-face indicates that his point of view must be from the belly of the gown.
“Oh honey! You look so gorgeous! Too bad theirs no way you would fit me now...” His wife glances down at her four massive tits, before her eyes seem to catch something on the ground. “Oh? What are these?”
Madeleine let go of Thomas with one of her hands and bent over—a pair of eggs dropping from between her avian legs as she did—to grab whatever she saw. Thomas felt her hand grab him in two different places as she lifted two more garments up into his view: a six inch long black miniskirt and a pair of lacy white panties. The way he feels these clothes must mean that they are what his shorts and boxers turned into.
“I could were this one dear. I think it’s short enough to not get in the way of my wings.” Madeleine laid the gown and panties across her avian back as she wrapped the miniskirt around her waist and snapped the clasps together behind her. As soon as he was put on Thomas felt an indescribable pleasure flood through him, as well as an irresistible desire to please the one wearing him. However his wife’s tauric body meant that there was nothing at her waist that he could pleasure. He helplessly writhed in agony, being granted to pleasure of being worn but having to way to pay back such joy, until at last his body found a way to take action. From within the pleated folds of his skirt-body a bulge formed, slowly snaking down it’s length. Madeleine, already looking down and appreciating how god her husband looked around her, noticed as this bulge emerged from below the hem, a thick, black tube that she instantly recognized as having the shape of a cock. She reached down to touch it out of curiosity, only to moan in pleasure as she felt her fingers touch the appendage. The pseudo-cock, made out of nothing but the fabric of Thomas’s skirt body, had been connected to her nervous system. She quickly found herself blissed out of her mind as she stroked the cock, the sexual stimulation making her body pump out eggs at an even greater rate. Enraptured in masturbating the cock her husband had given her, Madeleine didn’t notice as the panties and gown were taken from her back.
“I think he would look great on us don’t you?”
“Yes! He looks amazing, though it might be a bit hard for me to see where I’m going under all the frills...”
Treasa ignored the worried second half of Eithne’s reply, already sliding the sentient gown over her cock-head. It was a bit awkward and Thomas was worried that the eager woman might accidentally rip his very delicate-looking body, but those worries vanished the moment he was snugly wrapped around the pairs bodies, his chest wrapped around the breast-balls of the upper twin while the lower twin’s cock brushed pleasurably against his frilly skirt. Unlike with his wife there was no shortage of things to pleasure on the mutant girls bodies, and he immediately set to work at showing his gratitude for wearing him. The fabric on the inside of him formed several mouths that began to lick and suck the many sensitive parts accessible to them. A half dozen eagerly went to town on Treasa’s breast-balls while another pair took turns sucking on Eithne’s massive cock. A set of lips formed in either sleeve and began teasing Treasa’s armpits as four more did their best to lick at Eithne’s ass. More and more formed, attempting to make up for their near-failure with Madeleine by ensuring that every inch of the sister’s bodies were in rapturous joy.
Meanwhile the panties had been snatched up by Rosa. She and her bodymates trotted over to Frey, still struggling to pleasure his feminine body with his nigh useless wing-arms. Muirne pressed herself against her husbands shapely rear as Rosa and Adele leaned over his shoulders, panties Dangling from Rosa’s finger.
“Here Frey, put these on. From the looks of it you could use Thomas’s help satisfying yourself.”
Frey had been mostly blind to what was happening around him since he took his pill. When Adele’s words broke him from that trance he jump out of the couples embrace and flipped around. His eyes quickly looked over the mutant before him, especially the familiar eyes placed on the front of the massive horsecock, before quickly taking in the chaos around him. Now that everyone had transformed into mutants an orgy was slowly brewing in the plaza, the only people not participating at the moment being himself and the mutant before him. His eyes especially lingered on Treasa—her sister concealed under their dress—and Madeleine, the only two besides him still wearing clothing and came the an understanding about what the panties Rosa was holding were. Eager for release he grabbed the underwear from Rosa and carefully slipped them over his taloned feet. The panties were far stretchier than their apparent material would suggest, able to stretch over the tip of his massive cock, now sticking straight out form his crotch. As soon as the waistband snapped around him Thomas got to work in ensuring he never wants for stimulation by forming a pussy that instantly consumes his entire cock, balls included. His cock didn’t simply vanish into the void however as Thomas forms a second opening just below the first from which Frey's cock emerges and plunges into his own pussy. The sudden dual stimulation catches the harpy off guard, and leaves him defenceless against the cock-taur rearing up and pushing him to the ground. His wife smothers his body with the shaft that makes up hers as the presses her urethra lips against his face and beings to make out with him, causing him to shoot the first of many loads directly into his own womb.
Jen and Claire are stunned at how quickly everyone decided to take a pill, their plan to secretly infect the food ruined in a way that left no room for complaint. Their other three bodymates had already started joining the orgy, and the sisters only remaining decision was if they wanted to do something before (or during) it.