Free Use Foundation: Family Affairs

“Uh oh,” He said with a smirk, “Someone’s ready for round 2!”

Abby blushed slightly with her mouth full of cock, she felt a strange pride in being able to get her brother hard again. She let his cock drop from her mouth and stood up, “What next?” She asked with a smirk.

Carl smirked back, “Bend over, I’m going to take your asshole next.”

Abby tried to hide the nervous look on her face, she had just had anal sex for the first time yesterday with her boss. She bent over as commanded and braced herself, moments later feeling the coldness of lube dripping over her exposed asshole. Carl used a finger to spread the lube over her ass before sliding his finger inside of her making her gasp sharply. “Be gentle,” she said as he slowly worked his lubricated finger inside of her.

Carl stared as his 18-year old sister’s asshole took his finger, bit by bit until he was fully inside of her. Swirling his finger inside of her tight anus, he spread the lube all over the walls preparing her for his cock. Giving her ass a spank, causing Abby to yelp, he pulled his finger out and spread some lube on his cock and stroked it, coating it thoroughly. Gripping his sister’s hips he pressed his cock against her asshole and started pushing it past her sphincter.

Abby moaned at the feeling of Carl’s cock penetrating her asshole, sliding in easily thanks to the lube. She couldn’t believe her brother’s cock was in her ass, never could she have imagined this happening when she signed up to be free use. She felt his balls press against her pussy and could tell he was fully inside of her anus. The sensation caused Abby to let out a loud, low moan, “Ahhhhhhh…”

Smiling at his sister’s reaction, Carl started pulling his cock out of her ass before thrusting back in, fully fucking her tight asshole. He reached over and pulled her dark hair as he started fucking her deeper and harder, her plump ass cheeks jiggling with each thrust.

“God, your asshole is so tight,” Carl moaned as he reamed Abby mercilessly now.

All Abby could do in response was grunt, “uh…uh…uh…uh,” as the pain and pleasure of having her ass fucked overwhelmed her small body. Her small tits bounced with every thrust into her tight asshole as her brother pressed her against the table. She could feel every movement of his cock in her rear channel as he thrusted in and out, pumping as hard into her ass as she could handle. Reaching down between her legs she started playing with her pussy, stroking her clit as he fucked her sending more pleasure through her body.

Carl kept fucking his sister’s ass, her tight asshole gripping his rock hard cock. He was lucky he’d just cum inside of her so he could last longer, her ass was so tight that he would have cum in no time. The taboo of fucking his sister’s ass was driving him wild, she’d been so stuck up over the past few years as he was discovering his alpha side now he was putting her in her place.

“Who’s my cock slut?” Carl asked. Abby kept grunting from the ass fucking but didn’t answer, Carl tugged her hair harder pulling her head back, “Who’s my cock slut?”

Abby let out in a low rasp, “I am.” She kept stroking her pussy, keeping the ass fucking as pleasurable as possible. Carl spanked her ass hard as he fucked her, causing Abby to cry out. As her fingers stroked her clit she felt an orgasm welling up in her body, “I’m going to cum!” She cried out.

“That’s right cum, slut, cum with your brother’s cock in your ass!” Carl called back as he started fucking her even harder.

“AHHHHHHH!” Abby cried out as an orgasm sent waves of pleasure crashing through her body, every muscle convulsing. Carl let go of her hair and she collapsed onto the table, with a final grunt she felt Carl’s cum flood her asshole as he came inside of her. He pulled out his messy cock and wiped it across her ass cheeks.

“Carl!” She complained, “I just had a shower!”

Carl smiled back and handed her a dish cloth, “Next time I’ll do it before you shower.”

Next time, she thought realizing that this would be a common occurrence until he shipped out. Still she surprisingly...