Slang that was used in late 2010s, used for another way to say "mate".
yo sup m8, wanna finish building that mansion in minecraft?
Some autistic Guy who can't spell ZZ Rot.
I will buy a ZZ Wot. Then some sick guy parodies it and says: ZZ U Wot M8?
Rekt m8 is something you scream after you completely fucked someone in the ass.
“Oh, ouch, that hurts”
“GET fucking REKT M8!”