When someone gets between you and your friend while you're talking. Usually occurs at bars and other social events that involve drinking.
Dude, Steve and I were shooting the shit at the bar and this chick totally bro-busted us.
A group of like-minded individuals who have been enlightened by the act of busting frequently and spontaneously.
Hey, can I join the Bust Bros?
Only if you can bust for me right now.