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1.
Another term for beating off.
"Hey did James pull that girl last night"
"No he just stayed at home knuckle fucking all night"
by Trevor Pike February 18, 2006
9 3
 
2.
the art of bending one over the knuckles (the things that hold the train togather) of a stopped train and screweing the shit out of them and finishing before the train takes off and kills you.
pam was looking good at work today so after work we went to the bar and ended up knuckle fucking.
by Uncle chester the molester March 02, 2009
1 3
 
3.
basically the same thing as jerking off. just new sound for the beat
jerking off is the way you knuckle fuck. just that knuckle fucking is the new up to beat way to speak
by Daniel Coy January 19, 2009
2 4