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2.
A person who pisses someone else off to the fullest extreme.
What a fucking douche fucker. I hate him.
by Lyndsey January 17, 2004
 
1.
1). A phrase uttered in dismay over losing a race in Mario Kart.
2). An insult which cripples anothers self respect, as the victim is haunted by images of fucking douches.
1). You Douchefucker! You keep getting blue shells in second place!
2). Girl: Are you cheating on me?
Guy: Yes, why wouldn't I?
Girl: You Douchefucker!
Guy: AH! Do I really have intercourse with douches?
by Storyingtelling Sam May 09, 2006
 
3.
A girl who is sexually and/or romantically attracted to men who do not treat her well, and engages in sexual and/or romantic activities with then.
My older sister is a real douchefucker, look at her boyfriend.
by TheSexologist March 26, 2014