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Phrase(s): Know what?
Go to (Do you) know what?, Phrase(s): (Do you) know what? [and] You know what?
an expression used to open a conversation or switch to a new topic. • Bob: You know what? Mary: No, what? Bob: I think this milk is spoiled. • Bob: Know what? Bill: Tell me. Bob: Your hair needs cutting. Bill: So what?
McGrawhill's American Idioms And Phrasal Verbs