Similar to protocol. Brotocol is a strict code of conduct followed by bros. No matter what the activity may be, bros have to follow brotocol.
Tony: Bro, I don't care if you called shotgun, I'm sitting in the front seat.
Joe: Bro, you gotta follow brotocol, get in the back seat!
Joe: Bro, you gotta follow brotocol, get in the back seat!
by Joe Bro Bro Joe December 04, 2009