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Multiple Username Disorder: A condition that compels those inflicted to create a multitude of aliases on websites such as 'IMDb', in order to praise or defend their own message-board posts -- the ultimate goal being to elevate these aliases to becoming the board leaders, and thereby controlling all topics of discussion. Often, the MUD sufferer will create lengthy message-board threads, in which the posts are entirely by his/her imaginary correspondents.
Every freakin' internet discussion board you check-out these days seems to have a minimum of 2 MUD cases trying to monopolize the conversation with either every single banality that pops into their boring, schizoid minds, or squabbling and name-calling as they compete for the same space โ€“ Chief Nut-job.
by nom de plumb May 20, 2009
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4
When you MU a cigar, you are forfeiting it after only a few puffs, no more than an inch, due to the fact it didn't live up to your expectations.
He MU'd that cigar.
That cigar got MU'd
by NSSH August 18, 2011
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5
Racial slur to describe a person of Black/White mix.
"Just look at the niggers and muds, they're even worse than us," song lyrics: Kill Baby Kill -- Diversity
by totenkopf88 July 01, 2010
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6
Coffee. More specifically: 1) Gas station coffee, 2) A prison term for coffee.
"That cup of mud I got from BP was like drinking jet fuel"... "Get me a bag of mud from the commissary and we're straight".
by Cobalt321 August 12, 2008
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7
Slang for MDMA. "Mud" is a powder form of the drug ecstacy. Is often preferred to ecstasy pills as MDMA is pure, whilst ecstasy pills are often adulterated. It is a popular drug amongst ravers and people who do not trust the purity of pills, and ecstasy in general has always been associated, often by the police and government, with the underground dance music scene.

Other slang names include "mandy".
"Mate you got any mud for tonight? If not looks like we're on the pills again"
by Boothy_BW February 20, 2007
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