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1.
A word used mostly as a reference to "screw this" or "screw you" but may also be used as an explosion of silliness or anger. Originaly used to describe times where the thought process has broken down, it evolved into a word used against people or other objects.
Person 1: yeah, I ate all the pizza.
Person 2: BLAHBAH!!!
by Travis Cisco March 02, 2005