An exclamatory statement to describe a complete win or victory by coming out on top of a situation in every possible way.

A merging of the terms booyah and yahtzee (the highest dice roll in the board game).

Must only be used occasionally and in the right context to avoid looking like a wanker.
"I just got promoted, booyah"
"So did I, booyahtzee!"

"All the teams I bet on this week won, booyahtzee"
by Vedi July 11, 2008
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