Robin Grayson and Sebastian Post, sweaty from their workout, decide to push each other's limits in the empty gym. Robin, with his massive black cock, can't resist Sebastian's round, tight ass. He slaps and spreads those cheeks, revealing Sebastian's eager, virgin hole. Sebastian moans as Robin teases his entrance with spit and fingers, then slides his thick cock inside, stretching Sebastian's ass. The gym echoes with their grunts and the sound of flesh slapping flesh as Robin fucks Sebastian raw, making him take every inch.