What is Boo Yeow?
1.
another phrase for, "In yo' face
After breaking the bridge of one of his students, Professor Yeow shouted, "BOO YEOW!!!!!"
See
2.
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'