When two or more "bros" get in a fight over the same women. Usually at a party and while heavily intoxicated.
Bro 1: I came with Lexi, she's leaving with me!!
Bro 2: no way bro! She is soo over you she staying with me!!
Bro 1: no way bro!! (Gets in bro 2's face)
Bro2: way bro!!!! (Bro 2 & bro 1 commence to bro off fight/shit talk)
The act of 5 or more bros watching pornography in a low lit room sitting in a semi-circle while each bro jerks off the one next to him. One bro makes the ultimate sacrifice by forgoing being pulled off for the greater good.
Dude: 'In next weeks bro off I hope to not be the one at the start of the circle'