A version of
m8 spelled incorrectly, sometimes on purpose as a joke. m8 (m-eight), short for mate is often used in in-game chat on consoles and PC to be as efficient as possible when communicating.
Mountain-Dew fueled and
sleep deprived, childish gamers sometimes lose all ability to type correctly when raging and type m9 instead of m8. An
unavoidable typo when blinded by rage because 8 and 9 are next to each other.