Guess what!

guess what

A question that precedes a surprising announcement. It is a set phrase and is often but not always rhetorical. Guess what? Your mother is coming to visit this weekend after all. A: "Guess what?" B: "I have no idea—do you have news?"
See also: guess, what
Farlex Dictionary of Idioms.

Guess what!

Inf. a way of starting a conversation; a way of forcing someone into a conversation. Alice: Guess what! Bob: I don't know. What? Alice: I'm going to Europe this summer. Bob: That's very nice. John: Guess what! Jane: What? John: Mary is going to have a baby. Jane: Oh, that's great!
See also: guess
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

ˌguess ˈwhat

(informal) used to introduce something surprising or exciting that you want to tell somebody: Guess what, Angela’s getting married next month!
See also: guess, what
Farlex Partner Idioms Dictionary
See also:
  • guess what
  • what do you know, (well)
  • because of
  • for all (one) cares
  • for all I care
  • for all I, you, etc. care
  • be breaking a butterfly on a wheel
  • poop
  • Do bears crap in the woods?
References in periodicals archive
INSTEAD of Guess Who, let's play Guess What! Here we go: What's now on DVD, but is still as miserable, woeful and unfunny as when it was on at the cinema?
BACON AT THE MOVIES: DVDs; A look at this week's releases..