who the deuce

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who the deuce

An emphatic way of forming any statement or question beginning with "who," typically when expressing frustration, anger, irritation, incredulousness, etc. Who the deuce ate my lunch? That's the third time this month! A: "Who the deuce was that guy?" B: "I dunno, just some weirdo, I guess." The game show gives you a lifetime supply of hot sauce if you win? Who the deuce would want that as their prize?
See also: deuce, who

Who the deuce?

interrog. Who? (An elaboration of who. The deuce is the devil. See examples for variations.) Who the deuce do you think you are?
See also: who