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2.
to screw one of your friends over for your own benefit
He so buddy fucked me when he started dating my girlfriend.
by SweetTaterz August 14, 2010
 
1.
To have sex with a friend for comfort or sexual gratification rather than for romantic love.
We were soaked when we got home. we took off our clothes to dry them out and ended up having a buddy fuck.
by black flag May 31, 2004