Perky teen Serena, fresh from her workout, finds herself alone with her personal trainer. The gym's empty, and her hormones are raging. She can't keep her eyes off his bulge. He notices, and they lock eyes, the tension palpable. Serena, her body glistening with sweat, approaches him, her large breasts bouncing in her sports bra. She straddles him on the bench press, grinding her crotch against his growing erection. He groans, and she smiles, unzipping his pants to reveal his throbbing cock. She bounces on it, her tight pussy stretched by his girth, her tits jiggling with each thrust.