In the throes of a sudden, intense urge, he can't hold back any longer. His underwear, once pristine and white, begins to darken at the crotch as the warm stream of piss seeps through, creating a damp patch that grows larger by the second. The fabric clings to his skin, outlining his manhood, now freed and swaying gently with the force of his release. He feels a sense of relief, of letting go, as the last drops fall, leaving him in a state of disheveled satisfaction.