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1. The act of being successful or winning of some kind.

2. Throwing said success in someone's face. OR proving someone wrong in some way or form.
1. We won the basketball game! Boo Yea!

2. I was right! The Red Sox DID beat the Yankees. Boo Yea!
by Geena Dee May 27, 2008
11 3
When a person has an unattractive face and an attractive body.
Dang that person is a Boo yea, Yea on the body, boo on the face!
by whatev3 May 31, 2009
3 9