When you have uncontrolable bowels...aka Diarrhea.
I went to Pancho's Mexican Buffet, and before I could get to the table, I have an onset of the mudbutts... I seriously shit my pants.
von SnakeFight! 22. April 2006
An uncontrollable bad case of diarrhea that feels as if mud is oozing out of your ass.
After drinking a case of beer and eating some bad Mexican food, I got a severe case of mud butt.
von toast455 5. Juli 2005
The mixture of semen and fecal matter inside the anus
I busted all up inside of Rebeccas ass. Pulled my dick out and had mud butt all over it! Unforgivable.
von Robotcitizen 24. Februar 2015
a severe case of diarrhea.
My friend Kris ate bad sushi last night and today he has mud butt.
von EVCESQ 26. Januar 2007
horrible runny shyt; anal leakage
::WARNING::
Eating WOW potato chips may cause mud butt.
von Bongwater 15. April 2004
Mud butt is just another term for "Diarrea".
You chugged a bottle of soy sauce?

-Yeah.
Your going to have a serious case of mud butt, very soon.
von Nicsta 31. Juli 2009
Similar to explosive diarea but more intense and can cause more pain in the anus
I got mudbutt from that roastbeef sandwich!
von tiweryopo 11. Februar 2008
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