Also found in: Acronyms, Wikipedia.
An initialism of "how 'bout (about) you," a phrase used to extend a previously-asked question to someone else. The initialism is used primarily in text messages and online communications. Often spelled in lowercase letters. A: "what r u up 2?" B: "nothin. hbu?"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.