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DMF stands for Dumb Mother-Fucker.
A: This pic of u is gonna get a million lyks!!
B: If u upload dat pic.....imma shove ur hand up my ass.
A: Dude dat sounds wrong!! you DMF!!
DMF by jason.parter March 5, 2011
Related Words
dmf DMFM DMFO DMF-HAND DMF Syndrome dmfao DMFBB DMFC DMFCSAB DMFD
Darkmoon Faire, an Europe World of Warcraft server.
Hey buddy i'm from DMF server, and you?
DMF by kakotas7 November 26, 2009
DMF= Dirty Mexican Flu

The swine flu's nickname
OMG!! I have DMF!!!!
DMF by HockeyLover15 May 10, 2009
Think of an 8 year old girl that is a professional black belt and an anger problem. "She is a DMF"

Another example is a short 17 year old girl with the looks of a ten year old and the strength of 5 grown men is a DMF.
DMF by MiniClozapineLove August 13, 2011
"Die Mutha Fucka"
Used in online gaming.

Also see EMS&DMF
nOOb: I wonder what's behind this corner?
Repo: DMF!!!
nOOb: HOLY SHI...!!!
Repo: Get some! Get some! Get some of this! (while feeding nOOb a healty casing of lead).
dmf by AZN rule! April 28, 2003
Noun:
Double Middle Fingers-
When one is pist off at a person, situation or the entire world; flying two middle fingers in the air to demonstrate disgust, disdain or hatred.
Girl: My boss was a complete douchebag to me at work today. Wouldn't even talk to me.
Guy: Fuck him. DMF!!!
flying the bird; fuck off; suck my dick
DMF by BiteMe2014 February 16, 2014