The aftermath following m8
M9 by BïPolarBear July 5, 2016
When a newb tries to be a smart arse when calling you mate abbreviated as m9 instead of m8 just to piss you off. More commonly when playing an FPS such as Battlefield or CoD.
m9 by RoboticRansom May 11, 2016
Equivalent to m8, which is obviously short for "mate" mostly used in by immature 12 year olds or in dank mlg montages.
M9 by Dank_Shrekmaster69 November 3, 2016