A simple mixture of dirt and water. The viscosity of the mixture can be altered by adding or removing water, though the latter is substantially more difficult. Its uses are endless, ranging from pigpen groundcover to the primary ingredient in an easy to make pie.

The compound was first "invented" by the homo hobilis as a defense against unwanted female attention. He found if he flung it at them, he could ward them off. This ultimately proved contrary to his survival, however, so he began flinging it at those who encroached on his females. Also, those who stole his females received a rainstorm of it on his dwelling. This practice continues today, and occasionally excreted matter is added, for the sake of odor.

Nowadays, it is commonly seen as an obstacle to be avoided, especially by vehicular traffic. Nonetheless, it is still enjoyed by "offroad" traffic, and people playing tug-of-war. Thus, it can be deemed one of early man's most significant contributions to modern society, and grouped with fire and bacon.
Today I poured water into dirt, and pondered the resulting mud in both a scientific and philosophical manner

Matt chucked mud mixed with shit at his ex's new lover's house. Talk about stuck on her!
by TheFlyingWelshman June 10, 2014
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A word used to describe someones personality, usually a bad influence, an angry person, usually violent in an nonchalant way. Someone who is tainted. Dirty in a secular way. Sinful. Trouble.
by mudbunny March 21, 2009
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Made Up Drama. When they take the dirt stir it up with intentions to coat a situation to cover the open view of how it really is.

No body cares what people think. They all want to medicate. It's all turned to MUD.

Political campaigns: MUD

Family Ties: MUD

Ex's MUDers.
Wow, man that's a bunch of MUD.

Dude, some people. Mean, vindictive think they know it all MUD'rs.

Whats all that MUD for?

Let them sling all the MUD they want, know thy self, love thy self enough to know that MUD is every where and inside every one that wants what they do not poses for the sake of what they were not granted to have in the first place.

Does that MUD make any sense?

That fool really thinks any of this MUD is to the advantage of any one or maybe every one, it's a toss up, but then who flips the toss first man or tosses the first flip?

Watch that MUD girl, I bet he Pee'd in the dirt then trye's to sling it at you.

Girl when he/she slings that much MUD a persons way because he/she want's to be dirty. Wash it off, take a few breaths and Goodness loves a shower.

The dirt need the water to make the MUD work.
by K-Gean April 10, 2010
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Acronym for Multi User Dungeon.
A text based online multiplayer game format dating back to the early days of the internet, several still popular today.
Have you created a charachter on the MUD yet?
I was up all night mudding online.
by .Justaguy November 05, 2016
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Another word for the drug mdma aka extacy.
-We got steamed on mud the other day. It was insane!
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by Linguage Explorer A.K. December 06, 2007
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Acronym for Muck Up Day. The last EVER day of secondary school or college, when everyone in the senior year sets up various pranks to amuse the younger students (and themselves).
MUDs coming up - has anyone got a sheep we can set loose on the football field?
by Persian Princessxx October 20, 2009
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The abbreviation of Muck Up Day; a tradition that occurs in many schools (mostly private) on the last day of lessons for year 12s. Pranks are pulled on the rest of the school, including kidnappings, stink bombs, cod liver oil on banisters, viagra in the water supply and releasing three sheep labelled 1, 2 & 4 onto the school grounds (the groundsmen look for sheep #3 which doesn't exist). Students also personalise their uniform (rip it up...).

Water guns/bombs are also used and occaisonally students will hiijack the PA system.

School shirts will often be signed with 'MUD (insert year)'.
student one: did you hear that some of the guys hijacked the speakers in the main hall on muck up day? You should have been there...

student two: I can't wait for our muck up day. Wooo! MUD '11.
by keep.calm.and.carry.on.x May 14, 2010
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