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Phrase(s): Who do you think you’re kidding? Inf. You aren’t fooling anyone.; Surely, you do not think you can fool me, do you? • Bill: I must pull down about eighty thou a year. Bob: You? Who do you think you’re kidding? • Mary: This carpet was made in Persia centuries ago. Tom: Who do you think you’re kidding?
McGrawhill's American Idioms And Phrasal Verbs