Natalie has the controls to this magical rollercoaster

Josie's tongue lingered, lazily stroking a slimy trail along the thick veins of her monstrous black length of silicone which she held. It glistened with her own wetness, still warm and brimming with her almost acidic tang. A groaning hum filtered from her mouth blocked by the large pillar and slightly muffled by the obtrusion. Her other hand dipped slowly in and out, swirling occasionally over her vulva as she indulged for a moment. Her slimy fingers brushed up against her clit which just barely peaked from its hiding place, causing a rippling shudder and a gasp to pass through her, halting her slurping muscle for just a moment. Her naked body, still glistening in places with sweat, leaned back into the cushions with her legs spread and her eyes drooping in pleasure.

It was so freeing to be naked, sucking on a fake cock and rubbing her private place like this. A handful of cute boys watched, feeding her kink to indescribable satisfaction as she had fucked herself with this too-immense slab. Rose and Natalie had actual partners for their own needs but that was less of a concern for the slightly shy girl. The glee she felt as this immense toy plumbed her pussy to several mind-blowing climaxes all while a few boys… a few of her peers and friends watched with aroused attention…

*Smack!*

"You like that? You like it when I pound your boy-pussy with my massive cock?"

Josie glanced at her friend, watching with admiration as she plowed another of the trans girls.

Penny lay against the back of the couch with her ass up in the air and her hole gaping. Her poor "boy-pussy" (such an unfortunate name), between her cute ass cheeks, gaped wide enough that Josie's whole arm could probably fit. It fought against its **** expansion, the muscled ring clenching but barely reducing its cavernous shape at all as it winked to the open air. A clear line of drooling white ran from the massive tunnel, going down her pert cheeks, stopping where it collided with the girl's impotent little ball sack.

"Mmmph!" The stallion-hung Rose grunted, pulling her cock free from the similarly looking girl kneeling on the couch right next to Penny's cum-drunk form. Rose's cock came free with a flying spray of ass-lube and pre.

"Eeny, meeny, minie moe!" She counted with a perverse grin, pointing at the center most rear presented before her.

With practiced ease Rose transferred her pulsing pillar from the one gasping tunnel to another, thrusting with all of her jiggly forcefulness until her vivacious hips hilted against Penny with enough **** for even the girl's sexy little ass to bounce.

"UUUUGHHH-" Rose grunted as her cock began to surge.

Each of Rose's hands reached, thrusting four fingers at a time into the proffered back tunnels placed to either side of where her cock penetrated Penny's nubile form. Both of the other girls kneeling with their faces in the cushions moaned with delirious pleasure as the blonde stallion fucked them both with nearly a whole fist in each of their gaping anal tunnels. Their natural lube drooled and splashed as her fingers moved in rapid pace, sending the viscous and clear fluid out to add to the mess already present on the leathery couch.

How delighted Rose had been when the other two girls walked up, clearly pining for that dick and begging to be fucked like their peer. Rose had been ecstatic when she had asked if they were “also like Penny” and they had responded with excited nods.

Josie watched as Penny's sexy ass received its thick desert. Penny's trim midsection, already distorted by the pole bisecting her ass, bloated faintly with fluid and a groan escaped the flat-chested girl as heavy sperm coated her from the inside, burbling up in pulsing waves from Rose's massive horse schlong. Her eyes crossed, mouth gaping with panting moans when she suddenly gagged, convulsing bodily as something filled her throat and began to spill from her puffy lips. White, syrupy cum left her from the opposite end, not in such a ridiculous wave as what Avery could produce but more as if she were drooling the virile sludge that slid down her chin.

"Look at you, your hot little ass, so fucking stuffed… so tight!" Rose grunted, hands releasing the other two girls so she could sink her fingers into said cheeks, pulling out and forcing back inside once with a loud clap that sent sticky, viscous liquid free from her temporarily viewable shaft. The length of which was covered in slime and thick winding veins.

"Your tiny body, so cute and perfect on my dick… do you girls wish your ass' were bigger? You must plan to have that fixed right? You want some big and juicy ass cheeks for some stud to fondle as he fucks your boy-pussy's?" Rose gasped, squeezing gleefully at those soft little cushions of fat and muscle as her cock spewed the last of its thick icing.

Small moans of ascent reached her from either side, a response to the truth that Rose was speaking.

"Or these!" She said as her hips leisurely thrust inside the soaking tunnel. She leaned forwards over the girl, setting her perky orbs along Penny's small back so she could get at the flat expanse of the her chest. Sweat and cum mingled, slicking up Rose's gravity defying breasts as she slowly slid them back and forth on Penny's slim back.

"They're so fucking tiny! You guys must be planning to get them stuffed, yeah? Get some real massive honkers to go with that massive ass you want? That'd be fucking hot!" Rose's fingers swirled over the sensitive skin, finding purchase on the pointy nipples which produced a pleasing noise from the cum stuffed girl.

Penny nodded along as her ass tightened, constricting that steel pole like a vice as it desperately milked the last vestiges of the futa's climax. The other two watched with rapt arousal as their contemporary succumbed to the stallion rod. Small dicks and tiny balls, all but useless at their minuscule size, pointed down between each of their soft and spread thighs. The two lone girls played with themselves as they watched, stroking their inch long pointers as they rimmed their massively gaped anal tunnels with a delicately placed finger or pulled at a pointed nipple on their flat chests.

"You three are just a bunch of sluts aren't ya?" Rose growled as she pumped her cock a little harder into Penny's bruised and beaten ass.

In response she received a moan of agreement from her partner as well as a few knowing giggles from the other two. They really were just that brazen.

Josie's attention was pulled from this raunchy affair by her other two friends as Natalie spoke.

"Josie, come over here and let me and Avery have a look at you."

****, because she had to do as the cowgirl wanted when in her club, she stood while pulling the head of the silicone dildo free from her lips with a wet *pop*. She swayed over, reveling in her raw nakedness amidst so many people.

It was only a step or two away to get around the side of the couch so that she could stand before the pair. Natalie, curvy as all hell while her boyfriend sat with his immense cock hidden and even more immense balls spreading his thighs because of their raw size. She rode him even now reverse cowgirl style, raising her sloshing and rippling body with great effort on his rod of steel before she fell back down, causing a cascade of ripples to wash across her from those gigantic milk-frothing tits to her trunk which easily compared with Josie's own delicious rear. Except where Josie had fat, muscle and a healthy width to her hips, Natalie was all jiggly fat. With the addition of her belly, bloated beyond recognition with Avery's load, she encapsulated the idea of a jello person.

"There you are-" she gasped as she strained to lift herself high enough before plopping back down with a raunchy clap. A splatter of white cum escaped from where that mighty pole split her, covering the floor all around them as it exploded from her abused pussy.

"First lets deal with this horrible scenery" she said as she settled back down onto her throne of dick.

"Is this room not appropriate for relaxing and more importantly, fucking?”

She looked around, seeming satisfied as her eyes wandered over the dimly-lit and luxurious furnishings. Expensive carpet of a deep red hue, sofas littered here and there of different sizes and shapes and to one side a massive bed that fit in with the color and general energetic coziness of the room.

Josie mentally rolled her eyes at hearing Natalie’s words. It was weird to be asking so many questions like she had about things that seemed so obvious, but when it came to Natalie, that was just par for the course.

With a devious smirk on her face Natalie returned her attention to Josie’s naked form, her massive dildo held in one hand and wide hips shifting awkwardly.

Time to begin.

“Avery, tell me what it is about Josie that you like… sexually.” she commanded.

Sitting below her, with his cock penetrating her rib cage (not that she was certain she had one any longer), he looked over her shoulder at his very naked friend.

“I-I mean… I guess I do like how, uh… firm her butt looks?” he said awkwardly, not at all prepared for being asked by his girlfriend of all people to talk about another girl like this. He would’ve tried to beat around the bush with this but he was currently compelled to do anything that she asked since this was “Natalie’s Geeks and Gamers” club. At least he didn’t say all of what it was about Josie’s ass that excited him, its firmness despite its size was just the most compelling part of his observations about her beautiful rear. He tensed, worried what her response might be, but she seemed almost unconcerned by what he’d said…

That was only because he couldn’t see the girl from the front however. The face that Josie saw by comparison was far more delighted and sadistic than the softly feminine frame that Avery could see.

“Aww… that’s so cute, sweety…” she said in a candy-sweet, soft tone as she clamped her bloated pussy as hard as she could.

“Another thing, if her exceptionally ‘firm’ ass were changed in some way that were to be utterly humiliating to our friend here… tell me what that thing would be.”

Avery was again compelled to answer. That didn’t mean that he had to say the worst thing he could think of however. Wasn’t exhibition in itself a form of humiliation? He could say something that would appeal to those tendencies, something that wouldn’t get him in trouble with the purple-haired girl if he spoke aloud. She was a friend after all. That being said, just showing off her ass wouldn't be out of the norm for the pervy exhibitionist so for it to be even remotely humiliating he needed to pick something rather extravagant.

“Well…” he paused, gasping as Natalie’s wet hole squelched out a small river of cum down his thighs.

“I guess if her butt had a bunch of degrading tattoos pointing at her, um, hole… saying different interpretations of ‘put your penis here’ then I think that would be fairly degrading.” he said, gasping as his description caused his partner to begin to roll her hips, tugging along the base of his length with her cum-soaked lips.

Natalie giggled excitedly.

“But Sweety, that's not actually the case, is it?”

“Well, er…” he coughed, uncomfortable with bringing up what was or wasn’t written on another girl’s ass with his girlfriend.

“Josie, turn around so we can see this fine art of yours.” Natalie chimed excitedly.

Josie did as she was asked, blushing slightly as she turned about on her soft feet before bending over so they could see her squishy rear and all of the degrading content that it contained. It was littered with phrases and words in different styles and qualities with arrows arrayed everywhere pointing straight towards her “hole”. She reached back, spreading her luscious cheeks enough so they could watch as her dark star presented itself with even more writing hidden within the taint as well as a circle painted around the rim of her anus. Down the length of her crack lay the words “butt slutt” in bold letters even as other words fit in between and across them.

Josie knew her ass was her finest aspect and felt some degree of pride when it came to some of the finer pieces covering her soft cheeks. That being said, more than a few of these had been the result of a bet turned poorly when one of her friends would inevitably use her penchant for ass-tats against her.

Natalie moaned, impacting her fat butt against Avery as more cum flooded out of her stuffed womb.

“But, Josie, you don’t actually let just anyone who asks, fuck your ass, right?”

The view changed all together as Josie was no longer displaying her artistic backside and instead stood facing towards them bent over and sweating like a mule.

“What are you going on about Nattie, of course I let people dick my ass, do you think I’d advertise it for nothing?” she reprimanded her friend as some random geek pounded his rather average cock in and out, tugging on her arms like hand holds as he directed the girl to bounce against his thrusting hips.

Natalie liked watching this pompous, purple girl being fucked by just some random guy. It felt… cathartic in a way. Still, she was showing far too much gumption for the one without the power right now.

She glanced over her shoulder towards where Avery leaned back on his hands as he sat under her on the luxurious carpet. She ground her teeth in frustration. Somehow, his eyes were directed at Josie, at her hips and where they wobbled each time she thundered against the increasingly aggressive thrusts of her partner. Fine, if that’s what he liked then that’s what he’d get.

“Are my hips not wider and my ass not bigger and firmer than Josie’s by two-no-three times?” she growled as she rolled her ass over his thighs, dragging yet another groan from her man. She could feel the swelling, going quick and pleasurable as her lower body expanded to comical proportions. Even bloated with cum and with huge jugs of milk wobbling on her chest, her ass grew to a size that dwarfed those other parts. She soon covered all of Avery’s thighs, nearly down to his knees, rising as her firming rear caused her to climb even as the added quantity caused her to spread so far as to touch the carpet to either side of Avery’s lanky thighs and then some. She wasn’t back to Bean-bag size, not by a long shot, but she would still probably have trouble carrying around this massive expanse that now exploded from her.

Still, Avery’s eyes remained on the wrong girl. Oh, he enjoyed Natalie’s ass now, she could tell that much by the way he sunk his fingers in and how he tried to raise his own hips into her despite the weight. But he still seemed so determined to catch a view of his prior “partner”.

Fuck it. "Avery, tell me the most degrading, humiliating thing I could change about Josie.” she commanded in a growling, grinding of teeth.

Avery cursed his inability to keep his eyes off of his friend, realizing his mistake too late. He couldn’t put his finger on it, something about the girl just drew his attention, especially when she looked to be so pleased…

Physically there wasn’t anything too special. His girlfriend had bigger tits, ones that could make milk somehow, and then an ass and waist that defied the laws of science and could take all of his cock to boot. There was just something about Josie, that despite her apparent lack of “blessings” she pleased him in a way hard to describe. Something about the way she looked at others, as if with a quiet intelligence and, at times, kindness. Then her body, even less… curvy, something about the exact shape of her soft and firm ass in combination with her delicately small swells on her chest… an allure hard to fight for Avery apparently.

He completely glossed over the part where Josie had said “I could change”, tossing it up to another odd turn of phrase by his girlfriend.

Taking the first out that he could think of, Avery said the thought that came immediately.

“If she wasn’t intelligent.”

A chill spread up his spine as his girlfriend slowly smiled off into the distance. That was never a good sign.

She leaned into him, pecking him on the lips as he visibly sweat, watching her like some predator about to pounce.

“You’ve been the best boyfriend ever, the best I’ve ever had actually.”

He didn’t know what she could mean by that, as far as he knew she hadn’t even had a boyfriend before him. Still, just another nonsensical rambling of his girl. He did like how quirky she was, but... did she have to be so confusing all the time? Whatever the case, now was not the time to complain, Avery knew when he was walking on pins and needles.

Natalie put a finger to one painted pink lip as her pink hair swayed across one shoulder, a contemplative and too-cute look on her face. “But, you couldn’t actually be my brother as well as my boyfriend… right?” she so innocently asked.

Avery blushed, tilting his head to the side, feeling the full shame of his relationship once again. He supposed his sister couldn’t help it, that quirkiness that she’d gained from their mother causing her to say things like that whenever she felt like it.

Natalie giggled, squeezing down on her “brother’s” massive cock with her cum bloated pussy once more. The cavalcade of cum to be freed this time could no longer be seen, only felt, as her ass just covered too much for any of the considerable splash of fluid to come into view.

She returned her attention to Josie now, just seeing as the guy who’d been pounding her butt slumped off with a warm look of satisfaction on his face.

“Josie can’t be incredibly stupid, can she?”

Avery didn’t respond, uncomfortable as ever that his lover and sis was just saying such things.

Josie stared off, watching with an empty stare of interest at a pair of girls kissing on the far side of the room, sitting on one of the luxuriant sofas. Her eyes squinted, as if trying to comprehend the confusing sight of two girls instead of a guy and a girl.

“She also couldn’t always be overwhelmed with arousal, even to the degree that ejaculating barely decreases her constant need, correct?”

Josie whined, aware that she no longer had something big and hard inside her, something that could sate her watering womb. Her gaze just happened to find the massive dildo she’d dropped on the ground, she collapsed towards it, fumbling and whining in her throat like an uncomprehending animal as she finally found her sweltering pot and shoved the head in. Instantly she felt so much better, but soon found her need increasing and began to tug it in and out of her pussy as she fell forward onto her face and shoulders, hands set on the dildo inside her as her curvy ass and it’s raunchy verbiage displayed to those behind her.

“It’s a good thing that she doesn’t need to feel somebody's cum inside her for her to actually cum, yes?”

Josie pummeled in and out, a sucking, slurping sound following her feverish pace as her moans and whines rose ever louder. She could feel the pumping of her heart, the thundering in her pussy of a need to release and that she was nearing that release, or had been. It felt so so close, yet it didn’t seem to come closer even as she pounded against the entrance to her womb to the degree of rather harsh pain. In the middle of her need and the focus on her hands and that fake dick, her small intelligence couldn’t make the two steps to realizing what she really needed, to remembering that she needed a living human to help her climb that final rise.

“Everyone with a cock! Come over and help out this poor girl over here!” Natalie called out a little too ecstatically.

Roughly a dozen individuals walked over towards their corner of the room, driven by the compulsion placed on them, finding the moaning, purple slut drooling and whining as her pussy grew red from her own ****.

“All of you are going to fuck and fill this poor, sad excuse of a slut until she’s either **** or no longer desperately begging to cum!” she continued from her seat atop Avery’s thighs.

Before the arrayed group of boys (plus Rose and her three sluts) could begin on the horny slut prostrated between them, Natalie climbed to her feet (taking a few attempts and Avery’s help to actually succeed) making sure to clamp her hands over her pussy before all of the massive load that was held up inside her could escape.

She sauntered over, confident as she swayed her massive hips as all of her jello-like curves bounced to every step.

“I’m going to leave you here Josie, to think, to fuck, to get used to your new life while I go and enjoy mine.” She said as if a queen looking down on a hopeless street urchin in feigned empathy.

“But first you can have this gift. Drink, slut.” and she removed her hands, stepping just over the other girl’s hanging head as she gasped and moaned on the edge of orgasm.

Cum raced forth from Natalie's lips, a waterfall of white that burbled and slid onto the other girl’s purple head, quickly gooping into her hair and sliding down and around. Surprised, Josie tilted her head up, smelling that telltale stench as it slid over her nose and down her lips, a stench she recognized, if only by how common it was for her to be around it, for it to be inside her. She didn’t actually understand, but on reflex she opened her mouth, sticking her tongue out and hungrily gobbling up the sludge that drooled everywhere. Just one gulp and she was already cumming. She fell to the ground, convulsing with that big fake dick still standing with several inches out of her pussy, wobbling comically as her hips thrust and shook in a blinding climax. Yet, even now, she turned sideways so she could open her maw and accept more of the deliciously pungent fluid, gulping down every drop that she could manage in her moment of bliss.

Once emptied (mostly) of cum, Natalie took Avery's hand, leaving the other’s to the task of fucking her rival into depravity, a perverted elation filling her heart at the feeling of finally being the one in charge.

She giggled as she walked with her new "toy", the sound just a little too maniacal to Avery's ears.