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The act of a typically non-douche person having a moment of doucheness
Friend One: "I haven't had a douchement in a couple of weeks"

Friend Two: "Yes you have! Last night...when you were bragging to the bartender how big your calf muscles are."

Friend One: "oooohhhh...your totally RIGHT, that was a douchement!"
by Jackson's Holes June 14, 2013