Knuckle Slapped 

v. The act of a female punching a person (male or female) in the face. punch

"Julia knuckle slapped that bitch kissing her boyfriend."

Knuckle Slapped by Ibt January 23, 2016

knuckle tuck 

A knuckle tuck is when one curls up one's finger, tucks said finger into the receiver's anus, and continues to add more and more fingers.

Oh my God, Becky, Bryson knuckle tucked my camel toe for an hour straight.

knuckle tuck by CarlTheCamel March 21, 2016

knuckleball wanker

Someone who reckons they're the next reckoning of Cristiano Ronaldo because they once hit a football that moved a bit in the air

'Salim has started wearing Nike Hypervenoms because he reckons he's good enough to play professional football.'
'What a knuckleball wanker!'

knuckleball wanker by MaliaMadness2020 July 15, 2016

knucklefucker 5000 

A dildo, preferably large and black attached to some rubber (or brass if you're that hardcore) knuckles.

"Man you should have scene that crazy bitch's closet. It was full of knucklefucker 5000's !!

knucklefucker 5000 by CanadianSyrupSperm December 9, 2017

knucklephuck 

A knucklephuck is someone who jacks off with a tightly closed fist. Seemingly strangling the penis. It is also slang for guys who think or seem to think with the smaller head.

Will you just look at those 2 knucklephucks? They don't have a clue as to what they are talking about.

knucklephuck by MrMJaye2U September 29, 2018

knuckle child 

Sperm. The result of buffing one's bishop.

I spilled many a knuckle child watching porn last night

knuckle child by thepipe November 15, 2018

Knuckle-Stuff 

The action of inserting a closed fist into the vaginal or anal region. (more commonly known as fisting )

"Yo dog I just knuckle-stuffed my bitch last night."

Knuckle-Stuff by coolguy7583 December 16, 2018