Gak
To be beat down or killed by boffer weapons. More commonly used in past tense, Gakked.
We got gakked, yo.
by Exploding Boy February 09, 2003

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Top Definition
gak
Speed, meth, twick, crank, methamphetamine, Desoxyephedrine.
Ack! we're out of gak.
by Gakster October 22, 2003

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gak
Means 'Generelle Abkürzung' (General Abbreviation) in German and can therefore be used for literally EVERYTHING.
-I LOVE you!
-gak?
~~
-gak gak gak?
-gak!
-gaaaaaaak?
-gak gak!! (gak...)
~~
-Hello!
-gak
by Luca November 19, 2003

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gak
A popular Nickolodeon slime, available in many variations such as glow in the dark, speckled, cocoanut smelling, etc. Useful for making fart noises, grossing out friends or as sexual lubricant.
Sweetie, we ran out of KY gelly, go get some of your step daughter's Gak.
by Dameon Jackson January 17, 2005

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Gak
popular slang word for coke or blow.
Man, let's go line up a couple of phatty gakkers bro.
by SlipStream May 17, 2003

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gak
Movie crew blanket terminology for any film items or equipment.
The Grips left all their gak on set again.
by Dave Walker June 04, 2005

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Gak
slang for cocaine - from the nauseating effects of doing too much, causing retching after a hefty snort.
man, that gak last night was cut, I was nearly blowing chunks.
by China White April 02, 2003

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Gak
A word used, when no other explanation of how one feels can be explained in certain situations.
Jessica: "Don't even worry about it."
Me : "gak"
by Snagless March 23, 2012

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