adjective; the overall sloppy condition of a persons anal cavity...resulting from excessive flatulance and poor wiping skills.
when we ran out of TP, i suffered from mod butt
von chris tibbs 21. August 2004
shit on your cheeks. diarrea oh you butt
mud butt from chappeles show
von name34 3. August 2006
shit that is mushy or runny, started on the dave chappelle show
i had mudbutt last night and it sucked
von shaun 30. Januar 2005
its when you got the shits from drinking miller or bud all night
man i got mudbutt and is starting to really get raw
von negro 16. Oktober 2004
Also known as a Shart
Dude, we have to leave this party, I sharted.
von Bill 28. März 2005