Top Definition
Not a made up word -- It can mean hey, what's up, or Hell yeah!
Booyakashan! What's crackin?
by Cherokee December 08, 2004
some retarded word MR. Radmanovich made up.
Mr. radmonovich said "Booyakashan" and the rest of the school repeated it back to him.
by Franky G. November 06, 2003
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