by nutsmell May 13, 2005

to put it simply, fisting.
by holla at yall July 27, 2009

johnny t-bagged my roommate and then left with the pizza so when he came back looking to borrow some money, i knuckle fucked the shit out of his face
by diego delavega June 30, 2006

by Trevor Pike February 19, 2006

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 03, 2009

by Mr eason August 13, 2018
