When you're wearing a thong, and your balls are so saggy that each ball falls onto both sides of the thong creating newton ball like balls, and you have someone put their tongue in between both balls, and swing the balls together like newton balls. :)
by Throbin Hood June 13, 2016

Finger fucking a guy's girl under the table at a bar while he is at the table, then punching him in the face afterwards, karate style, with two fingers, like Chuck Norris.
by JDawgBroncos1! May 4, 2019

by merkinmuncher November 4, 2013

Ejaculation from masturbating.
by ~Rosie January 28, 2008

1. A name for a professional who is completely incompetent in his field. (ie an accountant in rural Kansas)
2. A tiny penis.
2. A tiny penis.
That damned piss knuckle did my taxes, and now I'm being audited by the IRS.
or
My piss knuckle hurts when I pee.
or
My piss knuckle hurts when I pee.
by derikny2 August 3, 2010

1. The sound you hear after being punched repeatedly. This is usually accomplished by a bully of some sort.
2. The sound of a habitual knuckle-cracker, especially one who is capable of cracking many knuckles at once.
2. The sound of a habitual knuckle-cracker, especially one who is capable of cracking many knuckles at once.
"Oh man, Jimmy's probably hearing a knuckle symphony right now! Lets call an ambulance."
"Hey, man, thanks for the knuckle symphony right there. Really appreciate it."
"Hey, man, thanks for the knuckle symphony right there. Really appreciate it."
by phool23 December 16, 2009

The act of vigorously scrubbing one's anus, usually with hot soapy water, to clean it of leftover fecal matter. It is more a practical technique than a pleasurable one, although some people find it serves the dual purpose.
The toilet paper at the resort was of poor quality so I had to hop in the shower and do a quick knuckle scrub before going to dinner.
by Diarrhea Farmer January 12, 2015
