by Trevor Pike February 19, 2006
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
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.
by Uncle chester the molester March 03, 2009
by nutsmell March 24, 2005
to put it simply, fisting.
by holla at yall July 27, 2009
When a guy's dick is soft so he squeezes the base and tries to fuck till its hard. While holding the base he hit's the other person repeatedly with his knuckles.
Well if it goes soft we have to take a break. I hate when a guy tries to knuckle fuck me. I end up with bruses.
by Wonder77 December 25, 2016
by L1feLus7 December 04, 2009