"Hey, Sis-wanna watch me jerk off?" Bonny Watson looked up and grinned. Bonny was cute with bouncy tits and a luscious ass. Her teenaged brother, Jimmy, had just been admiring the girl's sexy body, and the sight had given the horny booming hard-on. He had stood up, intending to go up to his bedroom and beat his meat off in privacy, but then a sudden impulse had taken him and he asked his sister that question.

Seeing that Bonny was not shocked or angry, but that she was smiling and looked interested, Jimmy shoved his pelvis out, thrusting his groin toward her. The front of his tight-fitting jeans bulged out with his stiff prick.

Grinning lasciviously, Jimmy cupped his hand over the fat ridge and rubbed his cock through his, jeans.

"You're naughty," Bonny giggled.

"Naw-ain't nothing wrong with jacking off, Sis," Jimmy said. He leered at her. "I bet you play with your own pussy a lot, right?" he added, starting to breathe hard as his hand massaged the huge lump of his swollen prick.

Bonny blushed demurely and lowered her eyes. But then she looked up at her brother again, fascinated by his hard-on, gazing at him through the web of her lowered lashes.

"Maybe I do," she admitted.

Jimmy grunted and his cock surged in his palm. He grasped the clasp of his zipper.

"Well? Wanna see my cock?" he asked, wanting her permission so that he wouldn't get in trouble later if she blabbed to their parents about what he did.

"Okay," said the blonde nymphet,

obviously intrigued by the prospect of watching her brother pound his prick. Her blue eyes were glued to his pain.

Jimmy drew his zipper down slowly, jamming his hips out towards the girl. She leaned forward in her chair. As his fly opened, Jimmy's stiff prick lurched out.

"Oooooh!" Bonny squealed, when she saw how massive his cock was. The naughty teenager had played with a few pricks in her time, but she had never encountered one nearly as huge as Jimmy's.