A lone, muscular jock, clad only in tight shorts, stands before a mirror, admiring his already impressive physique. Suddenly, his body begins to transform, muscles swelling and veins bulging. He gasps as his shorts strain against his growing cock, the fabric tenting obscenely. His hands tremble as he tentatively reaches down, feeling the massive, hardening shaft. He struggles to free his beast from its confinement, finally ripping the shorts away as his enormous cock springs forth, pulsing with newfound power.