Hungry for her stepbrother's cock, the teen sister decides it's time to satisfy her forbidden craving. She sneaks into his room, finding him in the midst of a solo session. His huge dick is already hard and glistening with pre-cum. She watches, her pussy throbbing with need, until she can't resist any longer. She climbs onto the bed, straddling him, and takes him into her mouth. She sucks him hard, her inexperienced technique making him even harder. He grips her hair, fucking her mouth roughly, his groans of pleasure echoing through the room.