Iron knuckle 

The sexual act of placing ones penis in an area that the other is unfamiliar with the penis being

Dude My girlfriend wanted an iron knuckle last night.

Iron knuckle by Igor_Keck February 8, 2021

Bush knuckle 

When you shave your head bald. slap butter in your unshaved ass, go down on a hairy female that smells like cigarette smoke and wet bus seats and go to town!!!

Dude I’m gonna get so drunk and bush knuckle Kelsey tonight.

Bush knuckle by Drip Drop February 3, 2022

Bloody knuckle 

The sexual act of cutting ones knuckle (2-3) and putting their fist in their partners vagina or anus to "claim dominance"

Heath: why are your knuckles cut
Avery: oh... Let's just say I gave my girlfriend a bloody knuckle
Heath:oh my God dude,why?

Bloody knuckle by Hamsir August 28, 2022

beach knuckle

As a noun:

A moose knuckle/camel toe presenting itself on the beach. Sandy.

Wiped out by a wave and washed up on shore with a sandy beach knuckle

beach knuckle by NukUBuk July 24, 2023

near the knuckle

Risque. Rude but not completely gross (joke).

"That gag was near the knuckle, man." "I know but still funny wasn't it?"

near the knuckle by piscivore September 14, 2017

Musky Moose Knuckle 

When a male wears too tight pants or skinny jeans way too long and develops under cheese

Dude, you're wearing that skinny jeans way too long, you're developing musky moose knuckle

Musky Moose Knuckle by coach.eddie September 16, 2017

Triple chocolate dinkle knuckle pumper 

A sexual action preformed by a barista and customer. Upon asking for a ‘triple chocolate dinkle knuckle pumper’ at your local Starbucks, you will be invited behind the counter. The barista will coat their gloved right hand, or if they’re feeling frisky, their left hand in dark chocolate sauce, then milk chocolate sauce. Then, ready yourself. Prepare for the star of the show known as the triple chocolate dinkle knuckle pumper. They shall reach into your rectum with their hand coated in two layers of chocolate. Their mission: tickle your kidneys three separate times through your intestines, coating their hand in a third layer of chocolate; YOUR CHOCOLATE. Upon removal of their hand from your inner chocolate twisty freeze, the action will have been nearly completed. All that’s left is to A. Consume the glove. Or B. Lick the triple chocolate dinkle knuckle pumper off their hands. It’s your choice, really.

Guy 1: dude, there’s this girl at the Starbucks in the town square, works there on tuesdays from six to nine. Best triple chocolate dinkle knuckle pumper I’ve ever had.

Guy 2: sweeeeet, dude.

Triple chocolate dinkle knuckle pumper by ethan__skywalker March 20, 2021