In a dimly lit room, a muscular, uncut man begins a rigorous sit-up routine, his enormous cock tenting his shorts. Each lift makes his cock throb, and he can't help but moan softly. He stops, pushing his shorts down to release his steel-hard cock. He grips it, feeling the blood pulse through it as he resumes his exercises, his body glistening with sweat. His cock bobs and twitches with each sit-up, his balls tightening as he nears climax, his abs contracting as he finally unleashes a torrent of cum, grunting with satisfaction.