Acronym for "What Would Tiger Do," often used to imply, in any given situation, would Tiger Woods would do; is usually meant to be used in a sex-related scenario.
Man 1: Dude, my wife caught me cheating with another woman. She's planning to leave me. What should I do?
Man 2: Ask yourself, WWTD.
Man 1: Oh. So pay my wife to stay with me while continuing to have sex with my mistress?