She woke up on a Saturday morning, her pussy a little sore from overuse. She had gotten her period a week before, so at least she knew she wasn't pregnant. Safely on the pill now, her brother could do whatever he wanted to her. Anything he wanted... The thought aroused her a little, causing her to rub her tender cunt as she got out of bed.
She pulled a pair of panties out of the dresser and slipped them on. She was reaching for her bra when without warning, the door opened, and her brother came in. She instinctively covered her chest with her arms. Looking her up and down, he grinned at finding her in such a vulnerable state. Standing in front of her, he pulled her arms down, forcing her breasts into view. The same prickly excitement flowed through her at being revealed yet again.
He fingered the crotch of her fresh panties and pulled them down slowly, leaving them at her thighs. She remained standing still, with everything showing. Finally, he said, "Mmm, I just cannot get enough of you, sis." He lowered his pants and underwear and started to jerk off.
Seeing his thick cock, she automatically went down on her knees. He held the back of her head, yanking her hair a bit, and continued stroking. With her hands on his thighs, she waited for his cum, her eyes glued to his large penis, which had filled her holes on countless occasions. At last, he moaned under his breath and let his sperm fly.