Hidden in his private gym, a ripped straight jock, oblivious to the camera, flexes his massive muscles for the sole pleasure of his unseen master. He grunts as he pumps iron, his bulging biceps and chiseled abs glistening with sweat. Unzipping his gym shorts, he reveals his thick, uncut cock, already hard from the exertion and the thrill of being watched. He strokes it slowly, teasingly, before picking up the pace, his breathing ragged as he nears climax. With a final groan, he unleashes a torrent of hot cum, his body trembling with satisfaction.