You've got to be kidding!

you have got to be kidding (me)

You cannot be serious; I don't believe it; this can't be true. A: "Did you hear that Sam got promoted to General Manager?" B: "You've got to be kidding me! That guy couldn't manage his way out of a paper bag!" Oh, you have got to be kidding! How can the traffic already be so backed up?
See also: have, kid

You've got to be kidding!

Inf. This cannot be the truth. Surely you are kidding me! Bob: Sally is getting married. Did you hear? Mary: You've got to be kidding! Bill: I think I swallowed my gold tooth! Mother: You've got to be kidding!
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