got the knuckles 

1.) Getting beat up
2.) A really rough and dry handjob
3.) Receiving unsolicited brass knuckles in the mail

Did you see John's black eye??

He really got the knuckles from Timmy!!!

or

Poor Peter, has a tough case of penile rash after he got the knuckles from Rachel in the car-ride back from the DMV!

got the knuckles by mattb520 February 6, 2021

white knuckles

To hold somthing with your hand(s) in a constant position so tight and long that blood rushes away from your knuckles and they become pale and sweaty.

He was white knucklin' the steering wheel.

That new video game will give you white knuckles.

white knuckles by HybridFlare September 16, 2005

Uncle Knuckles 

For a female, Uncle Knuckles is the act of allowing an older male, preferably 10-20 years older than herself, to finger bang her pussy.

Hey Donna. What's the matter? You seem like you are day dreaming. Oh I am. I went to a bar last night and had me an Uncle Knuckles. How was it? He said it was finger licking good.

Uncle Knuckles by Eaton Holgoode June 24, 2009

Jack Knuckles 

A chronic, habitual masturbator. Someone who is always giving himself a tug. Typically addicted to porn, stalks Facebook, Insta and other media for pics to fap off to.

May also be used as a derogatory term for somone who’s a POS.

My neighbor is a real jack knuckles. He’s always giving himself a wank online.

My uncle is a jack knuckles. I catch him tossing off every time I walk past the den.

Fuck that guy. He’s a jack knuckles.

Jack Knuckles by Eaton Holgoode December 8, 2017

cum knuckles

when you beat your cock so fucking hard your knuckles are slathered in cum

OMG I had the biggest case of cum knuckles when looking at a picture of ur mom.

cum knuckles by ryangb871 January 20, 2022

Tommy Tuff Knuckles 

Tommy is a bissness man out of NYC. Getting his start by manufacturing 6.5" chains and cables for construction sights. He's a know friend and colleague of Balboni

You guys work with Tommy Tuff Knuckles out of New York City, don't ya?

Tommy Tuff Knuckles by Tommy Tuff Knuckles August 29, 2023

orange as a white girls knuckles 

when thots use the fake tan and it gets all in their knuckles. synonymous with 16-20 year old instagram thots from the UK

yo shit dawg that hair is orange as a white girls knuckles

orange as a white girls knuckles by the nigmaster general September 30, 2020