Brown Knuckle 

When some one wipes their ass and their thumb knuckle hits their asshole before the toilet paper does, causing them to have shit on their knuckle.

Tom had to use extra soap to get off the brown knuckle.

Brown Knuckle by Iambetterthanu February 14, 2008

Man knuckle 

The bulge created when a mans pants ride up too high.

Dude that cowboy has to be uncomfortable. He's packin a major man knuckle.

Man knuckle by Wizz kid January 24, 2009

Sack Knuckle 

When a man is wearing tight pants and the crotch seperates his testicles showing a bulge on each side of the seam.

Look at that guy, his pants are so tight I can see his sack Knuckle.

Sack Knuckle by Otis The Duke January 26, 2009

Ham Knuckle 

Fisting a girl with large vagina lips (roast beef curtains aka RBC's)

Brian ham knuckled that girls in Brugges last night.

Ham Knuckle by Sneepers April 12, 2011

cinnamon knuckle twister 

When you fingerbang a mexican girl so deep that your nuckles massage her clitoris.

Me: how was your night with Juanita?
Renzoni: It was great, I gave her a stinky cinnamon knuckle twister

cinnamon knuckle twister by Mr.Prosciutto October 21, 2011

Face knuckle 

Another word for nose

Dude, you have an ugly face knuckle

Face knuckle by Emmurli November 5, 2016

Right-handed Knuckle Chuckle 

Same thing as spanking it and whackin' it!

Thomas went to the bathroom to do the ol' right-handed knuckle chuckle.

Right-handed Knuckle Chuckle by Cartman40 July 25, 2009