Perjoritive corruption of "dumb fuck" as conjured by those souls too lazy or inept to adjure to a more refined expression.
Thou knave! Thou hast callst me a "dumfuk!"
by Yon Callibrator November 17, 2004
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Someone who is being the most fucking annoying person because they dont know how to do the simplest thing
Person 1: "How do you turn on a microwave?"

Person 2: "You dumfuk, get out of my fucking hkme ya we prick!"
by ig: @reub.tay August 5, 2020
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