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The living, breathing equivalent to Ethan Tremble from Due Date, Alan from the Hangover, and pretty much any character portrayed by Zach Galifianakis. A child-like entity that can turn a priest into a murderer in less than 60 minutes. Also he has a bunny tail.
Zach Galifianakis is such a Jassar. I want to kill him!!!
by mr.super_awesome-o August 22, 2011
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