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Introduction:

Rob hacks into his sister’s Twitter account and sends fake tweets, that turn out to come true.

April 29th: finally found a way to loosen up my virgin-cunt sis

April 29th: 20 horse cocks will get that gash gapin. n a monster dildo stuck up the slots hole overnight LOL

Annie stared in awe at the present that her parents had gotten her. It was her final day of school, and—coincidentally—the day of her 20th tattoo.

It had been a big year—she’d methodically fucked half the school, her cunt growing tight again the next morning, each and every morning. By the time she seduced the last of the freshmen, she’d been delighted to find one with a cock that almost matched her brother’s—it meant that she was painfully stretched out every time, a sensation that she enjoyed more than anything.

Amber, meanwhile, had fucked around just as much, and the phrase “throwing a sausage down a corridor” had sprung to mind as she did. Amber was hugely envious of her retightening younger sister—when Annie was heartily fucked by Rob, it was like taking her virginity each time. “Stretch me!” she’d yell in ecstasy as he filled her up to an almost unbearable point.

Of course, Amber wouldn’t trade her loose gash for anything. To compensate for her own stretched-out hole, she begun taking the boys two at a time...in each hole.

At first, a few of the boys had felt iffy about it, thinking it ‘gay’, but it hadn’t taken long for her to persuade them. Amber still had the following she’d had before Rob had started the series of tweets—other than her sexy younger sister, no one else in town was considered half as sexy. If her enormous breasts and slutty attire weren’t enough, the way that she begged (as though a girl as attractive as her needed to beg) gave the men of her choosing such a surge of power that they were often, ironically, unable to resist her.

And so as she’d gotten accustomed to the feeling of two cocks sliding into the one hole at once, Amber had grown more and more explorative—she’d started sucking one guy, fucking another, and filling the rest of her holes with toys. Two in her ass, another joining the man in her cunt…at times, she cursed her small mouth—if she had the naturally wide smile of her sister, she might have even been able to take two cocks in her mouth at the same time as well.

As it was, she could only suck one, but if they had a wide enough girth, it made her lips stretch out obscenely, and her cheeks gape.

Meanwhile, the closer Annie had gotten to the end of the school year, the less worried she’d been about them being seen. Her second-most-recent tattoo was a huge snake-cock, coiled around her arm, its head forever frozen in the act of pumping out a huge load of seed into Annie’s hand.

But on this, the day of her twentieth tattoo, it was her latest ink that Annie was truly proudest of.

The artist had been extremely reluctant to do it, even after Amber and Annie had “persuaded him” as well as they were able. No matter how many times he pumped his load down their throats, no matter how perverse the acts they performed on each other while he took them from behind, he’d kept on refusing…

“You’ll regret it some day,” he’d said as Annie sucked his cum out of her sister’s ass, while she milked his cock between her huge, fake tits. “I can’t be responsible for making you walk around with that for the rest of your life.”

It was only when Rob himself had intervened, using Amber’s twitter account to get the artist his ex-wife back (and giving her a perpetual hunger for his cum) that he’d given in.

The tattoo had taken almost twenty hours straight, and so when Annie had returned home, she certainly hadn’t expected the reception that was waiting for her...

“Surprise!” her father had called, before his jaw had dropped in awe at Annie’s new, elaborate face-tattoo.

Truthfully, it started well below her face—like the tan one would get from wearing a low-cut shirt in the sun, it began between her breasts and bloomed outward from there. The lowest part of the tattoo was a rose-stem, but instead of a single flower, it led to a garden of filthy body-parts, sex toys, and ropes of white cum.

At a glance, the lower half of the tattoo could almost be mistaken for a bunch of flowers, but as the tattoo rose past her breasts and onto her collar-bone, it got dirtier and dirtier...lines of cum twisted into naked people doing unspeakable acts to each other, cocks spelled out lewd swearwords, and boobs were pierced with the outlines of cunts.

It had taken Annie and Amber the better part of a week to design its intricacies, and the artist had recreated it flawlessly.

Rising up her neck, the tatt sprouted animals committing buggery on each other and on representations of Annie and her sister. But when it reached her chin, the tattoo became less abstract, simulating a drop of cum dribbling down the side of her mouth, and—the piece de resistance—spelling the word “SLUT” in large, unmistakable letters across Annie’s face, with “SL” on one cheek and “UT” on the other.

“Oh, baby...” Annie’s father said with pride. “It...you’re so beautiful.”

A tear trickled down the side of her father’s face, but Annie barely noticed—she was staring in shock at the gift that her parents had decided to surprise her with on this important milestone of a day.

* * *

The back yard had been carefully arranged—the grass was mowed, the fence was nice and high, and in the centre, where there had been a tire swing for Annie’s youth, there was now a sex swing.

But that wasn’t what caught her eye—instead, it was the twenty horses that were arranged in a semi-circle.

Annie stepped forward in grateful shock. “Oh, Mom…Dad…

“Thank you…”

She stepped forward, tearing off her clothes as she did. Her gait turned into a run as she exposed her naked body to the twenty horses. She’d wanted to fuck a horse for as long as she could remember (as Rob had been surprised to discover—he hadn’t even implanted that desire—it had been a repressed desire of hers her whole life, brought out and amplified by her need to be the biggest slut she could imagine) and now it was coming true…twenty times over.

By the time she got to the sex-swing, she was completely nude, and she strapped herself in with glee, her hands shaking with anticipation. She had never been so excited in her life. Her mother and father had already begun to lead the horses toward her, while Rob held the video camera steady, zooming in on her tight young cunt.

The first horse stood behind her, and after a gentle massage from her mother’s hand, hardened quickly. She guided it her youngest daughter’s pink tightness, and as her mouth opened in shock at the size of the phallus entering her, Annie’s father used the opportunity to insert a cock into the young girl’s mouth, this one belonging to a huge, black horse.

Annie’s body was already shuddering with joy as the horse behind her worked out what was happening, and began to thrust, enjoying the sensation of the teenage girl’s wetness as its huge genitalia slid in and out. It was operating purely on animal need, not unlike Annie herself.

The teen girl was conflicted—on one hand, she wanted to shut her eyes so she could wholeheartedly focus on fellating the huge member that was currently trying to make its way down her throat, but if she did that, she wouldn’t be able to see the black, hairy legs of the horse that stood in front of her, and maintain full awareness of what she was doing.

She was fucking a horse. No, she was being fucked by two horses. She was performing acts so taboo that they were not only illegal, but most people wouldn’t even talk to her after learning what she’d done.

And she was loving every second of it. More than that—she was happier than she’d ever, ever been. Her transformation was complete: she truly was the biggest slut conceivable.

Out of the corner of her eye, Annie noticed some movement, and looked over to see where her sister was—she was acting as a horse “fluffer”, going from beast to beast to ensure that they were all constantly erect.

After making sure that the stallion humping Annie was firmly in place, their mother joined Amber in preparing the horses, and getting them excited.

Meanwhile, the girls’ father had been coating another horse’s cock with copious amounts of lubricant, and though it took some awkward shuffling, finally managed to get it into position. Annie’s eyes widened and she began to choke on the horse’s cock as in a position that she would have assumed to be impossible, her father managed to slowly start inching a third horse’s cock into her puckered asshole.

Rob smiled from behind the camera. He’d spent the morning on Twitter, ensuring that this wouldn’t cause any serious damage to the young girl, and doing what he could to make this as pleasurable as possible for Annie—even now, he could see her nipples were so ripe and plump that they practically threatened to explode, and in a few minutes, he knew that he’d be putting the camera on a tripod, and joining his family in helping their youngest member get heartily fucked by horses.

Annie’s eyes had rolled back into her head, and she’d begun to cry with happiness as the three horses abusing her body got a rhythm going, and started treating her like a mare they wanted to breed with. She was getting pounded so hard from every side that she was briefly worried about tearing, before just sinking into her own mind and enjoying the sensations.

The cock in her mouth was ready to cum, and as it thrust down into her throat, what felt like a gallon of horse-cum began to shoot directly into her belly. Her wild movements provoked another orgasm or two, and Rob made sure to zoom right in on her holes as the horses came, filling her up and then some. The camera captured some of the horse’s seed overflowing from her genitals, as the schoolgirl began to shake in powerful orgasm after powerful orgasm.

Finally, Rob couldn’t take it any longer. He waited while his parents and sister replaced the horse’s cocks, taking the opportunity to slip in and suck on his sister’s nipples. She opened her eyes in confusion, before smiling down at her brother, and then laughing at the sight of her sister—Amber had gotten a bit overexcited, watching her sister get fucked, and had stimulated a horse to orgasm. She was covered in horse-cum, and Annie knew that as soon as the second round of horses began to take her body, her mother would be rushing over to excitedly suck and lick it off her sister’s body.

“Thanks, Rob…” she said, while her sister got a horse cock hard and ready to slip into her mouth. “Not just for this…for everything. For Amber’s account.”

They’d never spoken about it directly, but Rob smiled in response to his sister’s words.

“I love you, Annie,” he said, but her mouth was too full of horse to respond.

Rob gestured for Amber to start sucking him off, as he watched Annie take the fourth, fifth and sixth horse-cocks into her small body. Her cunt would join her sister’s after this, perpetually stretched, loose and gaping.

It was going to be a long night, but he knew that the family would be closer yet by the time it was done.

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