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Broadly defined as anything that is very disgusting. Originally from the acronym "Mash Until No Good" from the practice of making many changes to a code until it is useless. Made popular from the Saturday Night Live sketch "Wayne's World", it was in the top 5 worst things to get in your halloween bag. It was mentioned again in South Park episode 317, this time more narrowly defined as a substance which comes out of a pregnant woman's vagina when pressure is applied to her stomach. And somehow an urban legend involving corpse fluids has sprung off the term mung, though there is no documentation supporting that this is anything other than a gross-out story.
The fraternity had a story about putting mung in the cookies they fed the freshmen. It was so gross!
by Monkeypirate December 10, 2005
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The one thing worse than genocide. One must first have no shame. Then he/she must use a newspaper to find the obituary of a recently deceased man or woman. Then must find a buddy, with no shame, who will aid them in this act. The partners then go to the cemetary where they dig up their victim, and flip a coin. The loser, (or winner depending on how sick you are), applies his/her lips to the genitals or anus of the corpse, while the other partner procedes to climb the nearest tombstone and elbow drop the corpse's stomach. Thus forcing out a blend of rich bodily fluids and embalming materials onto the partners. This blend is called mung. The act of getting this blend on your face is called munging. Chicks'll dig this one.
Freeloading bastards who mung will surely burn in hell.
by Oedipus March 01, 2005
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3
Its the stuff that comes out when you push on a pregnant womans stomach
I gave that woman a hug and mung came out!
by Trisha F09630 November 14, 2008
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4
In Australia the term - Mung / Munging / Mung out, means to eat. this is done most often while stoned or drunk. But it's just another term for eating, many people in Australia use this term.
Johnny: "man I'm so smashed, I need to mung out"
Matty: "Yeah lets go get some food"

10 Minutes later after food obtained.

Tom: "look at Johnny munging out on that pie"
by mika le mann September 01, 2009
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Australian -Verb - To eat with gusto and vigour, particularly when very hungry.
Comes from French: to eat - manger
Geez I'm starving, I could really mung down some carcass
by Chris25 May 17, 2010
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6
In Australia, means to eat or devour something, usually quite enthusiastically.
I need to mung on something

I'm starving I wouldn't mind munging on a pie right now
by Antoi June 16, 2008
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7
Computer programming term, stands for "MODIFIED UNTIL NO GOOD", meaning someone applied so many 'fixes', that it stopped doing what it was supposed to...

Later, programmers told new guys it stood for "Mung Until no Good", a recursive loop, and watched their heads explode trying to figure it out...

Speaking as a former paramedic, it has NOTHING to do with dead or pregnant fluids.
<Programmer 1> - Hey, that script work yet?
<Programmer 2> - Nope, It's Mung, Smith got to it first.
<Programmer 1> - Damn.
by MedPig October 05, 2007
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