mf has 2 meanings, often used as:
(i) Mother Fucker
(
ii) My Friend
definition (i) is more commonly seen in
chatrooms; whereas definition (ii) seen in multiplayer games.
if someone uses mf towards you, it's best to pretend
you dont understand, so they will explain - either (i) or (ii). Since you dont want to just start insulting them.
Example:
Blah.. lets stop the conversation.. I dont want to talk
abt it anymore.
ok mf.
mf?
mf - my friend.
Oh.. ok.. i thought..
nvm.