The young man, in a state of heightened arousal, slips his hand into his briefs, grasping his throbbing member. His underwear, already damp from his leaking pre-cum, grows wetter as he picks up speed. His breath hitches as he feels the familiar tingle of an impending orgasm. With a final, firm stroke, he cums, his underwear becoming a warm, sticky mess as his body convulses with pleasure.