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.

Combat Mosh by Sully the Thrasher May 26, 2018

Combat Mosh 

Originally coined by the thrash metal band Lich King, "Combat Mosh" is normally yelled out in mosh pits at metal shows. It is a call to action to others in the pit to beat someone up, normally because they're being a dick (targeting, hardcore dancing, etc.). Combat Moshing normally happens in large groups so participant's can't really be singularly targeted and thrown out.

Headbanger 1: Hey man, you see that asshole windmilling over there?
Headbanger 2: You're damn right I do!
Both: COMBAT MOSH!!!
*guy gets his ass beat*

Combat Mosh by doctor chad thundercock February 22, 2019