"I've never done it before," Trisha said shyly. "I hope… you know… I do it right."

"You're doing it just fine. Go ahead and stroke it fast like a good girl. Then I'll cum, and you can watch the jism squirt out of my dick!"

Trisha was very anxious to please her brother. Beneath her nightie her pussy was so wet that her inner thighs felt sticky with her seeping juices. Her nipples tingled. Her clit protruded from its protective hood.

Trisha began to beat her brother's meat. Her slick, sweaty palm raced up the blue-veined stiffness of his tool, scraping against his knob with every stroke. She stared at his twitching cum slit, hoping for the gushers of his white cream.

"Unhhh," Ralph sighed. "Oh shit, Sis… unhhh…"

The jism began to ooze freely out of Ralph's fat dick head. Trisha watched excitedly as her brother's cum coated the knob of his cock. The slit seemed to twitch every time more of his cream came out.

Experimentally she moved her hand up to his cock head, coating her palm with cum. Then she jacked him off much harder, her slick hand making wet slapping sounds against the stiffened flesh of his dick.

"Unh… lick it, Sis," Ralph moaned urgently. "Lick up my cum."

Trisha obeyed eagerly. Bending her head, she extended her tongue and licked a full, tantalizing circle around the mushroom-shaped crown of his cock. Her hand tightened around the base of his prick, jerking him off so fast that her wrist was a blur.

Trisha found that she liked the taste of Ralph's cum. It was warm and salty, and sensing it against her tongue made her even hornier than before. Sighing, she continued to lick his dick head like a small girl enjoying an all-day lollipop.

"Let me suck it now, Ralph," she whimpered hotly. "Oh please, I want to taste your big cock in my mouth!"

"Go right ahead, little sister. Suck my dick as much as you want!"