When a man inserts his penis into a girls butt and she shits on his penis, then they both thrust together in a way that pushes the shit into the mans urethra. The man then urinates the shit out of his penis into the girls mouth while shes sucks it.
"I tried giving Ashley a muddy garden hose last night, but now it hurts when I pee and she wont talk to me anymore."
by Imperitus May 21, 2021

by azar hundoo October 23, 2011

Farts that can often leave residue, often in the form of streaks, which can cause a wet muddy feeling between your ass cheeks.
Hey slut! Bring me a dish towel so I can clean up my muddy methane. Now, eat my asshole out you fucking asian cum whore.
by AmichaelG1 January 15, 2010

"Tom I just shit on my own ass". How did you do that. I had the runs from them new valcano tacos, and it came out too fast so i got a muddy creek.
by crandall777 April 4, 2009

by hella cogswella May 12, 2008

When during Anal intercourse (the woman may need to have diarrhea) the male pulls out and smacks his dick on the females back near the tramp stamp area. This will cause a lot of the fecal matter to be flung off and leave a trail of shit up the spine.
you dude i gave that bitch the muddy bicycle tire last night and she spent an hour in the shower trying to get the shit off! hahaha she couldn't reach it!!
by drewbag January 4, 2013

A membership organization in which to belong you must have taken a dump thought to be a clean swiper (little toilet paper used) and found upon said swipe a muddy mess with doody (feces) all over the paper even under your fingernail. Once you experience this you are officially, like or not, a member of the Muddy Doody Society (MDS)
Man #1: Hey man sorry I took so long, thought I was going to have an easy time in there but fell pray to the Muddy Doody Society.
Man #2: Shit man your first time becoming a member of the MDS?
Man#3: Hell no my wife checks my fingernails before we go to bed at night and she makes sure I have my membership card in my wallet.
Man #2: Shit man your first time becoming a member of the MDS?
Man#3: Hell no my wife checks my fingernails before we go to bed at night and she makes sure I have my membership card in my wallet.
by Looneylarry August 29, 2012
