Knuckle-Beef 

A) To fist an asshole. (verb)
B) something that is unpleasant (noun)

"Dude I gave her some serious knuckle-beef last night"

"Man, that test was some major Knuckle-Beef"

Knuckle-Beef by Jomofo September 27, 2012

beef knuckle

slang term for boner

I had a beef knuckle in the showers after football

beef knuckle by Brad Hull November 25, 2006

Beef Knuckle

When your balls are stuck in skinny jeans.

Man, I had some serious Beef Knuckle going on in my skinny jeans last night at the show.

Beef Knuckle by jakha290 October 18, 2019

beef knuckle beat down 

to have sex

Remember that girl from biology class? I totally gave her the ol' beef knuckle beat down.

beef knuckle beat down by long strongrod December 8, 2010

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

Beef Knuckles 

When a girl has her pants pulled way up, and you can see the outline of her beef curtain.

Dylan: Did you hear that Hunter fucked Kassie?

Kody: Ewww, she has beef knuckles.

Beef Knuckles by DildoNelson April 12, 2010