Mud docking 

When two people press each other's assholes against each other, and proceed to shit into the other's ass. It is then passes back and forth between the partners.

Went to an orgy once and there was a mud docking train going

Mud docking by Keif420 June 4, 2018

mudducking 

Code word for ugly girl fucking

Dude i was mudducking last night!

mudducking by AtotheX May 30, 2007

Murdocking 

The act of masturbating in public secretly

-looking across the table- "Hunter, where you murdocking? "

Murdocking by Tadius March 12, 2012

Murdocking 

When a professor is holding your grades hostage.

Sally took her exam in anatomy and physiology last Tuesday. Today is Tuesday of the following week and her grades are still not posted. Her professor is murdocking her with her grades; poor Sally.

Murdocking by Gradepolice February 13, 2018

Mudlocking

The act of having sex, either straight or homosexual, while defecating and rubbing each other’s feces all over each other.

JEFf: “Hey Rich. I heard that girl you fucking is a freak.”
RICH: “Damn right. She wanted to do some mudlocking so I shit on her chest and fucked her ass.”

Mudlocking by JR Shizzle December 8, 2019

mudducking 

Two guys that get together and go duck hunting to hide their secret love affair.

Doug and Sonny plan a bi-monthly mudducking trip to polish their guns together.

mudducking by Raven Sith January 6, 2023