Gack

When you fuck your bitch so hard that her pussy makes a farting sound much like the nickelodeon puddy like material "gack"

Yo dude, last night I gacked the shit out of ashley's pussy.

by ScuryJerry January 16, 2006

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gacked

I was totally gacked when I saw that pround was a real word.

by Cythere March 03, 2008

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The slimy substance (usually green) that was dumped on people in earyl Nickelodeon tv shows

"Thats the incorrect answer so you get drenched by a bucket of gack"

by Cane May 01, 2005

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adj. something that has become so corroded or gummed up with a substance that it is both visbible and fairly disgusting.

The inside of that bowl is so gacked you could sell it.

by aksarah August 25, 2003

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A really nasty substance. Like ear wax, saliva, boogers etc.

"Dude! Your ear phones are full of gack!"

by PaleteroJ March 27, 2010

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Similar to a circus "geek", a "gack" is a circus performer who sucks farts out of chickens.

It was amazing how the circus gack was able to withdraw flatulence from the hens and roosters.

by J.J.W. November 22, 2004

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A noun used to insult anyone that looks, talks, or acts like a dork.

OMG, don't let Stewart come with us tonight, that dude is a fucking gack.

by Richard Huang November 06, 2004

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