A Saying in Counter-Strike meaning literally "messagemode2" or "team talk only"

A cultural and aesthetic mind-state that prioritizes making money, even as an “underground” or “radical” creator. The work isn’t made for money, but it’s the money that matters the most.

mm2 can be used outside of gaming. It would be replacement to the commonly used and much loved acronym, STFU.

Only this time you are telling someone to mm2, and they're the only person on their team.