"Well," he nervously began, "I was wondering if you'd like to jack me off again?"

"Sure!" she squealed, throwing back the covers. "If you'll play with my pussy while I'm jacking you off."

Marci was completely naked, and Kirk just stared numbly at her firm young tits with the hard pink nipples standing up so deliciously erect. Her youthful body tapered down to her slim waist and then flared gently out again at her softly rounded hips. Her shapely little legs were slightly parted, exposing her smooth inner thighs that led up to her delicious little gold-fringed pussy.

"Take your stupid shorts off," she commanded as he stood there staring at her.

An exciting tingle rippled through her pussy when he dropped his shorts. Earlier in the evening she'd only seen his prick through his open fly, but now she was staring at a man's balls for the first time in her life. Her unbelieving eyes focused on his hairy sac that swung lewdly between his muscular legs. The sight of his long, hard cock-shaft thrusting up from his mass of curly pubic hair made the juices flow hotly from between her legs.

Crawling into bed, Kirk drew his little sister's soft, warm body up against him, covering her moistly parted lips with his mouth as they rubbed their hips against each other. He slowly moved his hand down over the smooth flesh of her back until he had her soft, wiggly asscheeks gripped in his palm, and, as he pulled her sweet, naked body closer to him, Marci could feel his throbbing cock burning against her quivering belly.

Finally releasing her cute ass, Kirk trailed his hand around her body until it was resting between her smooth inner thighs. Trembling with lust, he let his fingers slowly wander up until they brushed against the hot, juicy opening of her little virginal cunt.

"Ooooooooooh!" Marci excitedly whimpered when his finger gently moved up and down along the edges of her soft, wet pussy-lips. Dipping his finger into her creaming cunt, he slowly moved the tip of his digit up toward her erect little clitty.