Also found in: Acronyms.
slang An abbreviation of "what (are) you up to," used in text messages and online communications to inquire into someone's current activities or availability. A: "Hey, WUU2 on Saturday? Wanna see a movie with me?" B: "Tks, but I'm busy. Maybe next week?"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.