When you didn't quite wipe your ass enough after shitting and then start doing something very active that causes sweat to build up and mix between your ass cheeks.
Hugh:Man my ass hole boss rushed me outside the bathroom while I was dropping off the mexicans at the pool and I didn't quite wipe right and now I'm super uncomfortable with this killer case of Mississippi mud butt.
G.Rection: Man Hugh you should have just told him to go eat a big fat dick and finished that bowl blaster right.
by The real amazing racist January 18, 2014
Get the mississippi mud butt mug.
Can also be spelled "mudd butt blast"

1. (N) Severe gastrointestinal disturbances; symptoms include, but are not limited to, diarrhea, bubble gut, intense cramping, sharting, sudden and unprovoked sphincter clenching and ruined underpants.

Often the result of a long night of drinking, followed by the "this will make my hangover not as bad tomorrow" meal. Tacos, burritos, pizza, hamburgers, etc., will not prevent the mudd butt blast. Hydrate, my friends, hydrate.

2. (N) The result of a failed attempt at stifling a shart. Warm, runny, yet intensely odiferous and pungent. Mud butt blasts often leave stains that cannot be removed, resulting in ruined clothing.

3. (V) The act of dispensing of a mud butt blast anywhere. Due to the unpredictability of mudd butt blasts, these often occur in ones own shorts or pants.
1. I just finished a horrible mud butt blast... I BARELY made it to the toilet in time.

2. Matt just had to throw away his cutoff jean shorts because he left a raunchy mud butt blast in them. It even dripped out the pant leg!

3. Poor mikey... He mud butt blasted himself at church this morning while he was accepting the body of christ.

by S. Bruno May 11, 2008
Get the mud butt blast mug.
When a minority beats up a white trash bigot so badly that the bigot shits his pants. This is most often exhibited in Tennessee and elsewhere in the South where hatred against non white, heterosexual, Christians is common and minorities eventually get tired of being harassed by ignorant hillbillies.
Timmy, an inbred Tennessee native, did not know any better than to call his 6'5 black neighbor a nigger. One would think he learned his lesson after the neighbor broke his noise and beat him so badly that Timmy ruined his best pair of trousers with Tennessee Mud Butt. Unfortunately for Timmy, he like most people from Tennessee are so stupid that this was the 3rd time that month that he had started a fight with a minority only to end up with Tennessee Mud Butt.
by KelleyRoss August 11, 2009
Get the Tennessee Mud Butt mug.
Sticky to moderately wet feelings about the anus within a four-inch radius; directly related to doubts concerning whether a person has maybe shit their pants a little bit or has some kind of "butt leak". Those affected often experience symptoms including: anxiety, confusion, apprehension, inhibition, sudden loss of social-confidence, uncertainty towards whether their pants contain a "sticky-icky" mud-like substance. Victims often can be reassured by going to the bathroom and administering a "wipe-check". This courtesy-wipe can go one of two ways: 1) the toilet paper is unsoiled indicating a clean (yet sweaty) anus, or 2) the toilet paper is stained with a wet, sticky, muddish feces that must be removed if the victim is to return to their natural, unafflicted state.
After consuming his morning cup of hot coffee Greott walked to class only to discover he suddenly had Sticky-Icky Mud Butt. He knew that Sticky-Icky Mud Butt could be social suicide if recognized by his peers and that he may be in danger of being labeled "the smelly kid" or a person that "shits his pants". Having experienced this form of ostrification before he quickly went to the bathroom, hung his backpack on the back of the door, pulled down his pants and proceeded to wipe his butt-crack from the bottom up, observing the toilet paper for signs of sticky-icky mud. Thankfully the toilet paper was "clean" indicating moist feelings caused by heavy perspiration about the anus not a form of butt leak. "Probably caused by the hot coffee" he giggled to himself, and went back to class with the buoyancy back in his step.
by Party Crashers October 12, 2009
Get the Sticky-Icky Mud Butt mug.
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.'
by nurse hotpants February 11, 2012
Get the Viral mud butt diet mug.
When you take a large shit and have to use like half a roll of toilet paper because your shit is like sticky tar. Shit smears instead of wiping off. When you wipe it gets messier before it gets clean.
Mud butt is the #1 cause of skid marks
by Michele_plus_one August 5, 2016
Get the Mud butt mug.