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derogatory term used to express disbelief towards a personal request made by somebody who appears to be taking advantage of one's good nature

originated from the classic 90's movie 'Goodfellas', and as such must be said in a heavy Italian accent.
person 1: "mate, reckon you could give me a lift to the train station at 4am tomorrow? i'll buy you a packet of skittles"
person 2: "what do i look like, a schmuck-on-wheels?"
by D-Bizz November 27, 2006
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