Top Definition
m/f
People say on chats to learn whether you are male or female. After this question, they may say 'Fuck You' or 'Suck Your Balls'.
<Your>hello!
<Stranger>m/f
<You>female.
<Stranger>fuck u!
Disconnected
by fake hazard August 16, 2009
6 Words related to m/f

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