A good friend, homie, or pard that commits actions considered unfriendly, uncaring, and inconsiderate. Can be interpreted as a joke or warning to avoid bad friend behavior.
luke is a friend fucker, i got a ride with him to the park and he left me there with out letting me know.
by Lou Dumas!!!! November 9, 2010
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IS A MAN OR WOMAN WHO FUCKS OR TRIES TO FUCK HIS OR HER MATES GOOD FRIENDS. 1 WHO TRIES TO FUCK BETWEEN GOODS FRIENDS.
JOHN IS TARAS BOYFRIEND! JOHN IS FUCKING AND TRYING TO FUCK TARAS FRIENDS. AND IF THE FRIEND IS A BIT BETTER LEAVES TARA FOR THE FRIEND. JOHN EVENTUALLY GOES BACK TO TARA. AND TRIES TO FUCK A DIFFRENT FRIEND! JOHN IS A FRIEND FUCKER!
by YUM49 December 15, 2008
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when you have known someone of the same sex for many years and do sexual favors for eachother, without feeling gay about it. for males it's usually sucking eachother or jerking eachtother off. to help not feel gay about this, try watching porn while they suck or jerk you. for women, usually they use dildos or finger or lick eachother. once again, use porn to help.
guy 1: hey you want to go down to your basement and do a little something something?

guy 2: i guess so, let me just grab my ipod.

guy 1: why?

guy 2: so i can watch this milf suck this guys dick POV so i dont feel gay.

guy 1: good idea.

guy 1 is a bi-friend-fucker.
by fabledman November 22, 2009
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The idea that in order to reject someone you must fuck one of their friends, preferably in the rejectee's house. It helps if your friends assist you in finding a suitable and willing candidate. Once a candidate is found, approach him and explain that you need to have sex with him in order to make his friend leave you alone. Exaggerate about how much his friend is obsessed with you and tell him he can do anything he wants to you. If he accepts the offer proceed to behind closed doors and Fuck the Friend.
The Friend Fucker Philosophy is very effective, but should not be used to often. It is very slutty behavior and should only be used in extreme circumstances.
by BaconMastert September 21, 2016
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