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Mudballing 

When you poop into one's ass and they reciprocate the poop and it gains in mass as it travels back in forth.
Steve "I'm gonna poop in your butt."
Lindsay "I'm gonna poop it back in your butt"
Steve "Mudballing. Hawt."
Mudballing by Shadow Kunai June 15, 2011

Mudfalling 

(v)- The act of defacating on a person's face.
Jane was mudfalling on Joe.
Mudfalling by John Kellis Fernando January 5, 2007

mud balling 

The mutual passing of fecal matter from one person to another, through a passionate kiss.
Let's start mud balling till we puke!
mud balling by mud ball December 17, 2007

mudwalking 

The condition of having a dirty wolf caused by neglecting to wipe one's ass.
They were out of toilet paper, so I was mudwalking until I got home.
mudwalking by InSight Eller February 28, 2007

manballing 

when a girl checks out a guy whos fine.
"Dang Sam you were totaly manballing that guy over there"
manballing by sam June 19, 2006

mud balling 

And upgraded form of tea bagging. This is done by covering one's own testicles in fecal matter before placing them against the face of the victim.
"You goin' to let him get away with mud balling you?!"
mud balling by Mistearea April 26, 2013
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
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