nine ball knuckle shuffle 

playing with one's balls.

I saw Tommy doing the nine ball knuckle shuffle yesterday in his room. He really needs to stop jacking off on weekdays.

nine ball knuckle shuffle by Stickee Fingaz September 22, 2013

knuckle balling 

To fuck a chick with a big pussy. A normal sized pussy is called a camel toe. A pussy with large outer lips is called moose knuckles. Therefore, when you fuck a chick with moose knuckles, your balls slap her enormus lips. So your knuckle balling.

Dude, I hooked up with this hot chick last night but when the panties came off she had the biggest pussy lips I've ever seen. So, did you bolt? I thought about it, but I went knuckle balling instead.

knuckle balling by Bagmister September 28, 2006

Knuckle balling 

Jacking off

I’m ugly and fat. Knuckle balling is my best option.

Knuckle balling by El Wappo. May 21, 2020

Philadelphia knuckleball 

getting jacked off using a Philly cheesesteak. cheese sauce only. then rubbing the sandwich in your partners face while they eat it afterwards.

Are you hungry? I want a Philadelphia knuckleball

Philadelphia knuckleball by chapsfranklin September 3, 2016

Arkansas Knuckleball 

When engaging in intercourse with a woman from behind in the vagina, a quick, sudden and forceful penetration of the anus. Often occuring as an accident, it may also occur as a "How do you do!" to simply ring her bell.

Last time I was bangin'-it-in with that bitch, I gave her a donkey punch, so to spice things up, I gave her the ole' Arkansas knuckleball!

Arkansas Knuckleball by AssInClass December 21, 2008

Knuckleball 

A crazy shot in soccer where the ball moves side to side up and down and has and an unpredictable movement and is the Goalkeepers worst nightmare! Most knuckleballs only Alem Torlakovic ( Soccer Skillz82) can do!!

Alem has an unreal knuckleball !

Knuckleball by TorrujGoat November 11, 2019

Knuckleball 

A baseball pitch which follows an unpredictable path. Very difficult for batters to hit and pitchers to throw. Only a handful of pitchers in the major league actually utilize it.

Tim Wakefield Throws the knuckleball so good, it literally corkscrews.

Knuckleball by Lutzie October 7, 2009