A 20-year-old's curiosity leads him to explore his body's desires alone. His big cock, a testament to his youth, stands erect, begging for touch. He tentatively wraps his hand around it, feeling its warmth and hardness. His strokes become bolder, more confident, as he imagines the forbidden. His teenage hormones surge, and his body responds eagerly. His cock swells, and with a guttural moan, he comes undone, his cum spilling over his hand, a testament to his solo journey into manhood.