Mudfalling 

(v)- The act of defacating on a person's face.

Jane was mudfalling on Joe.

Mudfalling by John Kellis Fernando January 5, 2007

Mudballing 

It is the scat equivalent of "snowballing" (which would normally happen with semen). It means swapping feces back and forth between two people's mouths.

Nile is a weirdo, he tried mudballing wih his gf before

Mudballing by Kyle Glue February 18, 2018

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

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

Muffaling 

Muffaling , is when a women rubs her vagina on another girls face , witch could lead to Lip aids

Ha , i just been muffaling on sarah!

Muffaling by Butham August 18, 2019