While his girlfriend's parents are away, a skinny, shy guy visits her home after taking an erection pill. His girlfriend passes out drunk, leaving him alone with her gorgeous G-cup sister just as the drug kicks in. The predatory fitness instructor loves cowgirl and awkward men: she flashes her cleavage through tight workout wear, whispers dirty talk, grabs his cock, then bounces her tits and slams her plump ass down in a relentless piledriver ride. With his girlfriend sleeping nearby, her ferocious hips milk seven huge loads from him.