Top Definition
some kind of retarded butthead

synonymous with asstard


younger sibling: I gonna put my booger on you
older sibling: ugh! don't be such a butt-tard.

person1: I can't get this bag of chips open, tsk man, psht...this is butt-tarded.

person2: no, I think you're just butt-tarded.
by finfito September 26, 2008

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