Top Definition
Another word for a dumbass, or a dufus, or a shithead. Generally used as a negative term, towards someone whom someone doesn't like.
That guy Nick? Oh yeah he's such a blabbergaster.

Shit! I hate that Blabbergaster!

derp dufus
#derp #dumbass #dufus #shithead #weirdo
by Michael Richtor October 09, 2011
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