"Don't you dare touch me, Cristine!" her brother warns, but the thrill of the taboo only serves to fuel her desire. She pushes him onto the bed, straddling him and grinding her wet pussy against his growing bulge. "I've always wanted to fuck you, big brother," she admits, her breath hot on his ear. She strips him naked, revealing his thick, hard cock, and takes it into her mouth, sucking and licking until he's throbbing. She mounts him, riding him slowly at first, then faster, harder, their bodies slapping together in a symphony of sin. Cristine's tits bounce and jiggle as she fucks her brother, their moans and cries filling the room. She comes hard, her pussy contracting around his cock, and he follows suit, filling her with his hot cum. They collapse together, panting and spent, their secret safe for now.