Top Definition
another phrase for, "In yo' face MoFo!!!"
After breaking the bridge of one of his students, Professor Yeow shouted, "BOO YEOW!!!!!"
by nelly999 June 22, 2009
a word used to express elevated feeling of happyness or angryness
he waited in the closet until his wife brought home the other man then jumped out with a 14 inch knife and yelled 'boo yeow'
by hybuir April 06, 2004
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