A way of saying nothing implying a negative tone, usually of agravation. Generally used when some one is bored and wants something to do or if some gave a lot of effort for no profit.
Ex 1

Guy 1: Hey man, what are you up to?
Guy 2: Dickfuck all, wanna grab a beer?

Ex 2

Girl 1: How much did'ya win at the casino?
Girl 2: Dickfuck all!
by Dusty Bannister March 7, 2007
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