"Errrr – guy's g-gotta – you know…" he stammered.

"Sure, I know," she replied.

She gave him a saucy sort of look, tossing her head, dark hair cascading – dark eyes flashing.

Jack noticed that her nipples were jutting out stiffly in her flimsy black nightgown and that he could just make out the shadowed vee of her cunt-bush through the sheer, semi-transparent folds of the material.

"Girls do it too, you know," she whispered. Jack gulped. He had a sudden flash of his kid sister finger-fucking herself to a froth. His prick jolted at the fevered image.

"Go ahead," she said. "You can finish the job, Jack – I don't mind."

"You – you wanna watch?" he gasped.

"Um-hum," she chirped.

Jack was still feeling a bit guilty and ashamed, yet the thought of jerking off in front of his saucy sibling was a real turn on. She had already caught him pulling his prick and he guessed it didn't matter if she was there to see him spurt out his spunk.

He managed a grin and moved his hands away, giving her a full frontal view. Her dark eyes were glued to his groin and the pink tip of her tongue was showing, sliding slowly across her moist lower lip.

Jack wrapped his hand around his cock, holding it without stroking. Her gaze was caressing him so fervently that he felt he was basking in her heated admiration, as if her eyes were actually fondling his meat.

"Pump it, Jack!" she urged.

He gave his stalk a slow push-pull.

Bunny whimpered and sank down onto her knees as if her legs could no longer support her.

Jack stroked up and down on his cock-shaft again. It was looming up level with her face as she knelt before him. She leaned closer. He could feel her hot breath wafting onto his even hotter cock-head.

He wondered if he should warn her that she was liable to get a faceful of spunk.

"Wanna – wanna cum on my tits?" she whispered, her voice all husky with passion.