The waterbed undulates beneath them, mimicking the waves of desire that crash over Roberto and Rocio. She's a vixen, writhing and wet, her body glistening in the dim light. He can't resist her, can't deny the primal urge to claim her. She turns around, presenting her luscious ass, and he takes the hint, sliding into her tight, welcoming hole. The water sloshes around them, a symphony of their lust as they pound each other into a frenzy, their bodies slapping together in a wild, uninhibited rhythm.