The sight of his muscular Daddy's biceps flexing, veins popping, sends shivers down your spine. He strips off his vest, revealing a hairy, chiseled chest and a massive bulge. His cock, thick and uncut, throbs as he strokes it, pre-cum leaking out. He jerks off furiously, his breath ragged, until he cums violently, his big load dripping down his abs and onto the gym floor.