Outside, Samson is waiting for his sister to finish changing

Samson couldn't understand what was taking Eleanor so long. He knew she was excited, not just to go to the beach, but to go to the 18+ beach she had been barred from for so long. The youngest of her friends, she had been **** to hear about all the fun her girl friends had gotten up to for months. So when Samson had offered to take her the weekend after her eighteenth birthday, she had jumped at the opportunity. She had been giddy the entire ride there, practically bouncing in her seat the entire time.

Once they had reached the beach, his blonde sister had dragged him all over, surprisingly strong despite her small, 5'6 stature. Samson had been sure to keep an eye out for any leering guys who might want a piece of his adorable teen sister. Her enticing choice of attire didn't help, her small, cutoff top showing plenty of her small teen tits. That was one of the reasons he had wanted to come with her, to make sure she wasn't going to be harassed by any lecherous men. At 22 and 6'2, he felt he was certainly up to the task.

It hadn't taken long for her to get tired of the beach though, and she had dragged him to one of the changing rooms to switch into her swimsuit. He had asked why she didn't just wear it in the first place, only to be shushed and left outside while she went to change. That had been five minutes ago and Samson couldn't help but wonder what was taking her so long. He considered knocking on the door and calling to her, but cringed at the thought of other women inside thinking he was some kind of pervert. He would have texted Eleanor, but she had his phone in her bag. Sighing with defeat, he leaned back against the warm stone of the changing room and listened for her footsteps.

A second later, he heard something that certainly wasn't footsteps, but rather the heavy thud of someone falling to the ground from inside the building. The mere thought that his baby sister was somehow hurt threw every other thought from his mind, and he hurriedly pulled the door open and stepped inside.

"Eleanor, are you o...kay....." he said, his word grinding to a halt the same as his feet. Scattered throughout the room was what could only be described as the perfect lesbian orgy. Gorgeous women were sprawled all over, hands attacking mouths, pussies, tits, and asses. A pale Asian girl was gurgling with pleasure as a stacked blonde was sucking at her tits and fingering her gushing cunt next to another blonde and a Hispanic woman scissoring each other. He would have popped a boner at the sight if it wasn't for the sight of his sister being stroked and kissed by a vibrant redhead and one more blonde.

"Eleanor!" he shouted, grabbing his younger sibling's attention. She turned as well as she could with the redhead sucking on her tongue and looked at him, utterly terrified. Her eyes stared into his, lovingly begging for him to free her, before suddenly rolling up as a cascade of shivers ran through her small body. A tortured moan, muffled by the redhead's mouth, was still barely audible.

"Big titties, make you sexy," the remaining blonde crooned to Eleanor. Samson watched as the woman groped his sister from behind, her hands slipping under Eleanor's black one-piece to cup her small breasts, whispering in her ear all the while. The young girl continued to moan, thrusting her hips back, the sound of flesh colliding echoing through the changing room. Samson could barely stand to watch any more when his sister suddenly froze up, her eyes wide and helpless, before she collapsed in the arms of her violators, trembling.

Samson was unable to do so much as move as he watched a terrible transformation overtake his sister. Her small form, petite and adorable, filled out. At first it was uniform, her entire body gaining thickness, before localizing to certain areas, particularly her butt and breasts. Or rather her ass and tits, as the other two words couldn't hope to describe the curves that adorned his sister's body anymore. His kid sister, who had always been happy with what she had, now moaned like a whore as her hands ran over her enhanced ass, made up of firm globe that could deflect a quarter. The blonde behind her pulled her hands out of her top, revealing just how huge her jugs had become, overflowing from her hand and nearly outpacing her swimsuit's ability to hold them. She shrieked one last time, cumming violently, before she calmed down and exchanged soft kisses with the redhead.

"Big brother, I need your help," she groaned, slowly disentangling herself from the other two women. Samson finally saw her face, no longer naive and innocent, but the image of teen seduction. Her hands came up to grope her own massive tits, hips swaying as she approached him. "You can help me, right? It's something only you can do," she said, staring up at him through thick, fluttering eyelashes.

"Eleanor, I promise, I'll find a way to save you from this. I'll get you back to normal, I pro-"

"No silly, I don't want to be normal anymore. Look how much bigger these bazoongas are. Mmm, they're so soft and squishy and they feel sooo good. No, I need you to do something else." Samson couldn't move as his slutified sister approached him, grinding her newly voluptuous body against his bare chest. He was **** to endure as she circled him, continuing to crush her new assets against him.

"I'm eighteen now, and all the other girls will laugh at me if I'm still a virgin. But I don't have a boyfriend to fuck me into a little slut, so would you do it instead? You need to take care of your little sister after all."

"Eleanor, I can't, it's-"

"You can't? Are you sure? I can tell you want to..." she squeezed at the front of his shorts and the hardening cock hidden inside, making him throb harder. "Your little sister needs you. Needs you to fuck her tight little pussy. Needs you to take your big cock, take her virginity, and make her yours. Are you sure you can't do that? Because otherwise I'll just find someone else to **** me into a mewling slut, to stuff full of their thick cum, to breed my little muff. Do you want me to go do that? Or will you?" She finally came to a stop in front of him and pulled away, giving Samson a initial feeling of relief followed by a desire for more. He watched, entranced, as Eleanor slowly bent over, thrusting her large ass up at him, the flesh there tight and sexy. She wiggled her butt at him and slowly peeled her swimsuit off, revealing the entirety of her new body and her drooling quim especially.

"Last chance Samson, or I'll go find someone else to break me in. Do you want to fuck your slutty sister?" Samson continued to stare at her, rooted in place by the crushing combination of desire, fear, need, horror, lust, and love. He watched as Eleanor's changed face looked back at him from over her shoulder, eyes alight with want. She slowly rose back up, hands trailing over her gigantic tits and down her lithe torso to her hips. "I guess that's a no. Maybe you can have the sloppy seconds. Or twenty-seconds," she said with a giggle, taking a slow step past her brother, fully intending to go search for a fat cock.

She didn't manage to step past Samson before his arm shot out and grabbed her. With a fiendish burst of strength, he pushed her down, her ass once more raised for his viewing pleasure. He wasn't looking this time though. He quickly pulled his cock free of his shorts, the rod standing at full strength. With a groan of sheer need and despair, he pushed forward, his shaft sinking easily into his kid sister's drenched pussy.

"Ooohhhhhh, so biiig..." she moaned, her words almost overwhelmed by Samson's own tortured cry. He had to resist the pressing urge to blow his load right there. He was far from a virgin, but Eleanor's pussy was the best he had ever felt. Another part of him desperately wanted to pull out of her, to stop violating his little sister in the worst way. Neither part of him could come out on top, and he instinctively started rutting her, hips pumping and making them both moan.

"Fuck me, fuck me, fuck me mooooore....." Eleanor babbled, her mind devolving into the same sexual haze as the other bimbos in the room, all of which were crawling closer to the incestuous coupling. They moaned and sighed, pressing their bodies against Samson as he continued to thrust into his sister's virus-filled pussy. He grunted and thrust harder, no longer focused on the fact that he was fucking his sister, instead wholly immersed in the fact that he was fucking. The person didn't matter any more, only that they had a pussy and that he was in it, working his way up to a huge orgasm. Additional mouths and hands trailed over his body, urging him to fill the pussy he was in up with his cum and then to fuck them full too. Feminine breaths and moans surrounded him, each one begging for his dick, though none as much as the one he was currently buried in.

"FILL ME, SEED ME, FUCK ME, FUCK ME, FUCKMEFUCKMEFUCKMEEEEE!!!!!" Eleanor screamed, pussy tightening as she came explosively. Her jerking body, bucking hips, and clenching cunt as all it took to finally push Samson over the edge, and he roared as he filled her up with all of his cum. Each blasted lasted almost a second, and each one sent a rush through his body, every wave making muscle bulge and tighten, balls swell, and dick grow. He came harder, new nuts giving him even more jizz to pump into his teen sister's hungry pussy. His flow poured out of her, dripping to the floor and down her legs as she was pumped full of more than she could ever hope to handle. Eleanor came again, and again, each new shot of jizz igniting her orgasm anew, until, with one last powerful blast, Samson shot the last of his load into her and she screeched, mauling her tits before passing out in the middle of cumming.

Samson pulled out of her, letting a wave of semen out of her stretched pussy and letting his huge dick bob freely. It only went unattended for a moment before the Asian bimbo took it between her tits, her pale skin making his bright red shaft stand out all the more. One of the platinum blondes took his exposed head in her mouth, sucking out the remains of his orgasm and trying to take his next load too. Samson vaguely felt that he should be concerned about something, but all of these sluts, these bimbos, were all so willing, so **** to fuck him. From the deep, dark part of his psyche came the want to fuck them all, to keep them as a moaning, writhing pile of womanly flesh all **** for his cock and cum.

Without a second thought, he embraced it and pushed his dick further into the blonde's mouth, pouring out another load of jizz. The bimbo came instantly, writhing against her sisters as femcum splattered everywhere. All of the other mindless girls wrestled and fought with each other, each one frantic for their new stud's dick. One finally came out on top, the black-haired Hispanic girl, only to be pushed aside by the revived Eleanor, who didn't waste a second in sucking her brother's huge length to the hilt in her throat. She choked and gurgled on him, looking up at him with whorish need. The two siblings barely registered each other as anything other than a source of pleasure, same as all the other women in the room. Their familial bond faded in the face of the fuck, the endless rut that now consumed their simple minds.