"Trisha, you can't do this!" Ralph said excitedly. But his cock grew that much harder in her grasp, and he did nothing to stop her. "I'm your brother!"

"But I want to, Ralph! I really do."

Trisha wasn't lying. Very, very badly now she wanted to feel and suck and fuck her brother's magnificent big dick.

It was the first prick she had ever seen up close, and Trisha took her time studying it. The swollen pink shaft was laced with slender, blood-engorged veins, and she could feel a bone-like stiffness at the center of his dick. The dark, short cock hairs ran profusely from the root of his dick between his legs. The sac of his balls was heavy with the load of cum. Even as Trisha held it she could feel Ralph's prick pulsing and twitching against her palm.

The head of his cock was every bit as large as her dad's was. Trisha stared hungrily at the bloated knob, admiring the texture of the thin, purplish skin, the shape of his cum slit. She was very glad now that she'd decided to seduce her big brother. Just feeling his cock in her hand was making her cunt wetter than it had ever been in her life.

Tentatively, Trisha tightened her fingers around Ralph's rubbery stiffness. She brought her hand down to the base of his cock, then rubbed it back up again, milking the loose pink flesh with her hand.

Ralph's dick trembled with desire in her fist. Immediately his cum slit opened, and a thin trail of white jism appeared at the tip of his knob.

"Unh… oh shit, Sis," Ralph groaned, his expression contorted with lust. All the resistance seemed to pass out of his body. "That really feels good… you're making my dick… ah shit… so fucking stiff."

"Does it really feel good?" Trisha asked anxiously. Staring at his throbbing cock, she stroked it a little more quickly.

"Yeah… beat it off for me," Ralph moaned. "Oh fuck, I can't believe I'm doing this with you. Jack me off, Sis."