The act fornicating (male on female) by which taking the lovely lady from behind, once finished, you pull your fleshy meat stick out and to your surprise, it is covered in fecal residue. It is at this point you realize your error.
Oh boy, I was so drunk last night, I hammered Beatrice from behind, only to later figure out I had gone Mystery Mudding.
When your partner, takes a steaming dump on your face, and you smear and wear it like a mask to exfoliate the skin.
"Rachel gave me a himalayan Mud bath last night, now my cheeks are softer than a babys bottom"
When you have a case of sickness and everything you have taken in or are taking in via mouth, evacuates itself out your ass in a watery, muddy consistncey for a lengthy period of time.
'After eating that seafood I had a serious case of the Viral mud butt diet!'
Or
'I knew the flu was going around, and it hit me hard with a case of the Viral mud butt diet.'
A hand-job where shit is used as lubricant.
Your mom gave me a mud-job last night! It stunk!!
An anus.
She only let me hit the mud raisin because she said she was a virgin.
The viscous secretion from an unclean greasy butthole.
I pulled out of chad and my dick was covered in his Louisiana mud.
a man made vehicle that is build by rednecks. they use yard scraps. they go muddin with the mud buggie. rednecks put tires a slide a ladder and lawn chairs on a built thangy
bubba and the guys built a mud buggie to show off at the pit