Combat Mosh

A phrase coined and popularized by the band thrash metal band Lich King. Something you yell in a mosh pit,(usually at a metal show) when you want to kick a poser's ass, or get other people to help you take down someone being a bully in the pit.

Guy who's being an asshole tries to start a fight with everyone instead of having a good time.

*Person tired of the bully's shit* COMBAT MOSH!!!
Bully gets wrecked.