With a mischievous glint in his eye, the muscular trainer sneaks into the bathroom, his heart pounding with the taboo of the act he's about to commit. He closes the stall door, the click echoing in the empty room. His huge cock, already rock hard, springs free from his shorts. He strokes it, his grip tight, his rhythm steady. The sound of his hand moving along his shaft fills the room, a symphony of his lust. He imagines his mom, her voice encouraging, her eyes filled with pride. His cock throbs, and he feels the cum rising, his body tensing as he lets out a low grunt, his hot seed spilling onto the dirty floor.