A variation of the word Cock used on gaming servers that do not allow profanity in order for the gamer to avoid being banned. Most oftenly used when repeating movie quotes from Jay and Silent Bob Strike Back.
Vitapimp: Mooby is a 1337 player because he loves the COCK!

Noob Admin: Stop using profanity or you will be banned!

Vitapimp: Sorry dude. Fear the CACK, it pwns joo!
by vitapimp June 10, 2008

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When one person slaps another in the face with their penis.
If that stupid ho bites my dick again, I'm gonna cack her.
by Yeahr May 20, 2008

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Australian slang(?)
1. To laugh in a shrill manner
2. A humorous situation that would induce such a laugh

Short for "cackle":
1. To make the shrill cry characteristic of a hen after laying an egg.
2. To laugh or talk in a shrill manner.
"We were, like, at Maccas, and Sheila was drinking a milkshake, and like, she laughed and it came out her nose. What a cack!"
by frood March 10, 2005

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a variation of the word "Cock" that can also be used at the end of just about any noun or verb. It can also be used to replace the word "cock", or any noun/verb.
Hey, what's up Jimscack? Want to go to the mallscack?

Hey, can you pass me that cack over there? (in this instance, the word cack has replaced the word tool)
by Thomas Beesleyscack April 13, 2008

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A white person attempting to say the word cock.
Dude I saw this chack today and her tats were so fawking big dude it made my Cack get hard.
by Brendoballer February 28, 2008

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All those in the US military receive a CAC card Common Access Card. This card is commonly refered to as one's Caack.

Bro Pilot: "Dude, you forgot your Cack again!"
Bro Pilot 2: "Yeah, I left it in the damned Cack hole"
by Peni S. Gigantor August 29, 2007

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A slang term started in Anaheim, CA by members of the Rio Vista Street Vatos (RVSV) gang combining the words cock and fuck. The term can be used to either descibe the physical beauty of a woman, or to describe the action of engaging in sex with a woman. See examples.
I want to cack that bitch.
She's a fine ass cack.
Would you cack her?
Yes, she's a cack.
by Darrrick September 26, 2006

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