knuckle-off 

The act of ejaculation or masturbation. Rooted from the trifecta of knuckles that surrounds the end of a penis during masturbation.

"Hey man I'll be over in like 5. Just gotta go knuckle-off a few."

"That girl was such a tease, but whatever. I'll just knuckle-off a few when I get home."

knuckle-off by AK!!! November 14, 2007

knuckle bus 

The van which Sears Holdings uses to rent out, if you do not have a big enough vehicle large enough to transport your purchase.

Hey Bill, could you take the knuckle bus to Advanaced Auto Parts to get some brake pads?

knuckle bus by Herbie the Elf who doesn't like to make toys. June 10, 2008

knuckle nut 

A jack off. Or, ejaculation caused by masturbation.

"Quit being a knuckle nut and come help us". Or, "I had a knuckle nut in the shower this morning".

knuckle nut by TheParrott May 19, 2010

Knuckle Blasting 

Getting a tattoo of letters on each finger (generally excluding the thumbs) in order to spell a word or words about eight characters in length. The tattoo goes between two knuckles per finger on the outside of the hand.

"I had a little knuckle blasting session last weekend at the tattoo shop. It says 'hold fast' because I'm a sailor."

Knuckle Blasting by Symmetria May 22, 2014

Knuckle Bumping the Oatmeal 

When you fist a loose bitch with a yeast infection.

Wallace- Dude, you took her home last night? She's a no-go with that YI.
Jones- Nah man. I was knuckle bumping the oatmeal all night.
Wallace- You're fucking sick.

Knuckle Bumping the Oatmeal by Kiril Ishikawa May 25, 2015

knuckle wanker 

The act of pleasuring yourself by repeatedly punching yourself in the cock.

You're a knuckle wanker.

knuckle wanker by Arnold Shwartzenigger October 8, 2019

knuckle beefing 

To violently finger fuck a girl or to ultimately become knuckle deep in her vagina while furiously finger fucking.

Dude! I was knuckle beefing that girl from the party last night so hard.

knuckle beefing by blowjobjack December 28, 2019