Step cousins, barely legal, find themselves alone in the house. She's a tease, he's a virgin. She struts around in tiny shorts, her ass cheeks peeking out, tits bouncing. He watches, his cock hard, unable to hide his excitement. She notices, a wicked grin spreading across her face. 'You want this, don't you?' she asks, grabbing his cock through his shorts. He nods, speechless. She leads him to her bedroom, pushing him onto the bed. 'Undress,' she orders. He hesitates, then complies. She mounts him, her pussy wet, and rides him, her tits bouncing in his face, their bodies slapping together in a symphony of lust.