Crusty Knuckle 

After someone has fisted another person, they leave their hand uncleaned for a while. The fluids, dry and harden on the hand, forming a Crusty Knuckle, or Crusty Knuckles depending on the severity.

Jasmin fisted Leeroy. She left her hand overnight an the shit hardened. In the morning her hand had turned into a Crusty Knuckle.

Crusty Knuckle by L.Jenkins January 11, 2012

Sponge Knuckle

Close to the idea of a moose knuckle or a camel toe. The only difference is that the woman is really fat and she wears tight pants and you can see the cellulite through them, looking very similar to a sponge.

I was walking down main on a Friday night. Bitch had white yoga pants on and you could totally see her sponge knuckle.
hanging lowwww

Sponge Knuckle by Carlypants May 19, 2013

Witch Knuckle 

A fucked up nose with a sharp bend in the middle

Check out the witch knuckle on that broad...

Witch Knuckle by Chris Pounders September 18, 2013

Bum Knuckle 

A particularly large irritating haemorrhoid.

the steak Geoff had the night before created such difficulty pushing the poo out that it created a real bum knuckle.

Bum Knuckle by Dragon Iron January 5, 2014

Taint Knuckle

Someone that shoves all their fingers into a females vagina, so that their knuckles are touching the taint...

Dude my bro Jackson just taint knuckled Rhonda.

Taint Knuckle by The Judge of the Northeast April 26, 2015

moose knuckle monday 

A social media hashtag where guys show off their moose knuckle on Mondays.

Yo Shanikqua, did you see the bulge in that dudes pants?
Yeah girl don't you know, it's moose knuckle Monday!

moose knuckle monday by Silky mane May 13, 2016

tennessee knuckle duster 

When you beat the living shit out of your wife and kids while fucking your cousin in her husbands trailer.

That was the best Tennessee knuckle duster I ever gave. (Sips moonshine)

tennessee knuckle duster by Timbsareniggerboots January 22, 2017