The gym's familiar scent of rubber and sweat is amplified by the young man's arousal as he drops to his knees, his eyes locked onto his stepdad's heavy balls. He can see the outline of his stepdad's cock, straining against his shorts, and he knows he wants it. He reaches out tentatively, his fingers brushing against the coarse fabric, feeling the weight of his stepdad's balls. The older man tenses, then relaxes, allowing the young man's exploration. The young man's fingers trace the outline of his stepdad's cock, feeling it pulse with life. He looks up, his eyes begging for more. His stepdad, his chest heaving with the effort of holding back, nods, and the young man eagerly pushes his shorts down, revealing a thick, veiny cock, already dripping with pre-cum.