The Dirty Dozen...not because there are 12 people but because there are six people all with split personalities:

Eminem and Slim Shady
Proof and Derty Harry
Bizaare and Peter S. Bizaare
Mister Denaun Porter and Kon Artis
Swift and Swifty McVay
Rondell Beene and Kuniva
D12's CD, Devil's Night, is one of the funniest on the planet.
by Keith November 4, 2003
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"D12" stands for "Dirty Dozen", as D=Dirty and 12=dozen. It's a rap group consists of Eminem a.k.a Slim Shady/Marshall Mathers, Denaun a.k.a Kon Artis, Big Proof a.k.a. Dirty Harry, Swift a.k.a Swifty McVeigh, Kuniva a.k.a. Rondell Beene, and Bizarre a.k.a. Peter S. Bizarre. "D12" met seven years ago at Detroit's Hip Hop Shop, a local hangout where emcees of all calibers would gather in hopes of droppin' a verse or two during the store's "Saturday open-mic sessions."
by Fangsta March 20, 2003
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A legendary rap group who now have 5 members (r.i.p. proof well never forget you). Started out in the Hip Hop Shop in 1990 with Killa Hawk, Eye-Kyu, Fuzz Scoota, Bizarre, Eminem, Proof, Bugz, and Kon Artis. Then Killa Hawk, Eye-Kyu, and Fuzz Scoota left and Bugz brought in Swifty and Kuniva. Then Bugz died in 1999, so then it was left with Eminem, Proof, Bizarre, Kon Artis, Kuniva, and Swifty. So thats when the group rose to fame. They Released 2 Albums Devil's Night, and D12 World, which I think went multi platinum. Then 2 years after D12 World was released, Proof got shot dead at the CCC Club in 4 AM by a bouncer, after getting in a fight with a US Veteran over pool, they say Proof shot the US Veteran first, but they claim to have found the same bullet in both bodies. So thats what left them with 5 members, they will be realising a 3rd album in 2010. R.I.P. Bugz and Proof.
Hey, imma put some d12 on my iPod
by R.I.P. Proof D12 August 7, 2009
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A rap group from Detroit also known as the 'Dirty Dozen', 'D-Twizzy' and 'Detroit Twelve'. They rose to fame when one member of the group, Eminem, gained fame and signed them to his record label Shady Records. There were 6 people, all with alter-egos, but one died in 2006. The group was formed when one guy said that the illest rappers in Detroit should join and form a group.

Eminem AKA Slim Shady
Proof AKA Dirty Harry
Bizarre AKA Peter S. Bizarre
Kon Artis AKA Mr. Denaun Porter
Kuniva AKA Rondell Beene
Swift AKA Swifty McVeigh
D12 are the shiznit
by KidKizzet March 3, 2009
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The Baes Rap Group ever
It is eminem and 5 friends = 6 x their alter egos = 12 and all from detroit = D they are the Dirty Dozen or the Detroit 12. It was started in 1990 and when eminem got big they were the first ones to get signd to Shady records and have been on every eminem cd even Infinite the street sold debut of eminem and Fucking Crazy, the underground album that is extremely rare same with the album, Drugs
they are:
Eminem/Slim Shady
Proof/Dirty Harry
Bizarre/Peter S. Bizarre
Kon Artist/Mr. Denaun Porter
Kuniva/Rondell Beene
Swift/Swifty McVeigh

Their Debut was Devil's Night

Their second was going to be Devil's Night 2: Halloween but was changed last minute to D-12 World it comes out April 27, 2004. The sigle will be "My Band"
"I take a couple uppers and down a couple downers, But nothing compares to these blue and yellow purple pills"
from purple pills by D-12

Made them triple plantinum!
by Daniel February 28, 2004
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Idiot. It stands for "Dirty Dozen". Listen to their lyrics.
by Bastardized Bottomburp October 3, 2003
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D12 are a extremely talented rap group from detroit, michigan. sure eminem is alot more famous than the other members, but they are all as good rappers as each other. except for bizarre, i fucken hate that loser. and D12 stands for "dirty dozen" not "detroit 12" for all u dumb asses out there.
yeah D12 are the shit

R.I.P Proof
by strommerz December 22, 2006
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