mDat is a pronoun used in the common phrase "mDat Host" where one feels that their connection to a Call of Duty game is immensely warrior-like that they have the best connection to the game and is able to beast it out.
Decoy: "bro they're all in blue"
Shadow: *gets triple kill feed*
Decoy: "oh snap"
Shadow: "mDat Host"
Shadow: *gets triple kill feed*
Decoy: "oh snap"
Shadow: "mDat Host"
by Flareon May 12, 2014