whats boo-ya mean? 
I thought everyone knew what booya means, but heres the definition:
1. booya
It means basically, "bam!", "in your face", and "hell yeah", all at the same time. A term that self congradulates the user, describes excitement, lets others know the magnificence of the celebration or rouse as well as the superiority of the user, and is used as an exclamation of those ideas.