Mud Knuckle

After taking a poop the average human, chooses to wipe the anus to remove any left over excrement. When in the wiping process if on discovers that fecal matter is left on a finger, he/she has been mud knuckled.

i had some taco bell yesturday, ive been crapping all day, sloppy ones too, i even got mud knuckle it was so bad.

by mike lea January 19, 2005

Mud Knuckle

During anal sex , upon re-entry you bend your hard on and it looks like a bent thunb.

I got a Mud Knuckle while plowing some chick in the ass last night. Hurt like hell.

by Dadawggy January 19, 2019

Mud Knuckle

The Anus

Your Mud Knuckle smells.

by Gulies January 25, 2009