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Someone who is so douchey, they destroy all signs of non-douche, and their being there radiates doucheness for hours, sometimes weeks.
Those people from Jersey Shore are such douchenukes.
by Foofy! April 18, 2011
The only weapon capable of dealing with a Mega Douche, this is a put-down so powerful the offending douchebag realizes the full extent of his douchiness and is vaporized.
Did you hear the put-down Mike dropped on the Mega Douche Dickie? Total Douche Nuke! Dickie melted down completely.
by speedshift September 14, 2014