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1.
cdc
Cult of the Dead Cow.

Founded in 1984 in Texas, the cDc was a group of hackers who came together to create one of the most-accomplished groups of the computer underground.

The group started out by publishing the very first "e-zine", and has continued to be a leading developer in Internet privacy and security tools to this day. Extremely famous for remote administration tools Back Orifice and BO2K.

cDc is also a hot spot for news from around the world and has articles related to computer programming/hardware/administration/hacking, in addition to articles about anything and everything else.

In short, these guys were the original 1337 h4x0rz.
"All of us in the cDc participate in this site. If you want to complain because this ain't teaching you how to be an 31337 hax0r, you can eat our collective ass. Thx!"
-From the cDc homepage.
by Godfather July 15, 2005
 
2.
CDC
CDC stands for Centers for Disease Control. Without the people who work there and other disease research places we'd all have crabs and cat scratch fever. Also in other cases they have a tendency to overreact to things.
Made up statement #1 from the CDC : We're working in conjuction with researchers from the United States Army and Navy to find long-term treatments to the ongoing but controlled MRSA outbreak.

Made up statement #2 from the CDC : OMGWTFBBQ a huge case of emola has taken over the free world as we know it and we should all evacuate the planet!!!! We're all gonna die!!!!
by Sid Barrett January 14, 2008
 
3.
cdc
Cult of the Dead Cow or cDc. Creaters of 1337 and group of 31337 h4k3r5 who use Back Orifice
cDc h4x3d my b0x
by Shiv October 08, 2003
 
4.
cdc
Acronym for crudely drawn cock (not the animal).
I got a new graphics tablet today, you know what that means: CDC!
by StrangeQuark February 04, 2005
 
5.
CDC
California Department of Corrections. The California state prison system.
Tyrone: "Hey Shiniqua, where Rayquan?" Sheniqua: "O, he done gone fuck up again and be doin da time in the CDC fo holden up the fried chicken and koolaide stand again." Tyrone: "O fo sho!"
by J-Cat Title 15 June 20, 2006
 
6.
cdc
Crudely Drawn Cock - precisely what it says on the tin.

These dicks are often coloured magenta (purple) and created in a simplistic style using tools such as Microsoft paint.

They can be seen on the forums of www.b3ta.com where they have cult status and always achieve a cheap laugh. this may have been where they were first conceived.
i just photoshopped a cdc into the hand of george bush.
by brownish November 26, 2006
 
7.
CDC
Stands for "Crying Drunk Chick". This female has had waaayy too much to drink, and is therefore reliving a break-up/reminiscing about the past/ sobbing about their low self-esteem. There's one at every party.
"Oh man, I totally took on the role of CDC last night."
by MAKKER December 16, 2008