Epic acronym for "Good as keent" - derived from the word cunt. Used in casual conversatiom to emphise the level of one's coolness. being called a "Gak" (said as it is written) could quite possibly be the biggest, highly ranked compliment given by a mate. Used generally between guys - a way of showing their affection for another bro without sounding pussy; Gak coming from a chick is even more complimentary because any chick that knows and uses the word Gak must be a Gak herself.
Guy 1: Bro, (insert name here) seems pretty chill ae?

Guy 2: bro hes a gak

Guy 1: yeah seemed like a gak

Guy 2: yeah man, gak as.

all the other guys in the room agree that (insert name he) is DEFFINATELY a gak
by chillgak December 20, 2010
Top Definition
Speed, meth, twick, crank, methamphetamine, Desoxyephedrine.
Ack! we're out of gak.
by Gakster October 22, 2003
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
Means 'Generelle Abkürzung' (General Abbreviation) in German and can therefore be used for literally EVERYTHING.
-I LOVE you!
-gak gak gak?
-gak gak!! (gak...)
by Luca November 19, 2003
popular slang word for coke or blow.
Man, let's go line up a couple of phatty gakkers bro.
by SlipStream May 17, 2003
Slang term for the drug Crystal Methanphetamine, also known as: Speed, jab, ice, crank, dope, shard, wigg, sketch rock, tek.
A synthetic drug synthesized in 1887 by a German Chemist (L. Edeleano)
"He smoked so much gak he can't even blink, let alone fall asleep."
"I was so tired earlier this morning, but gak's got my back!"
by Jay Skathe September 15, 2005
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
hippy term (possibly northern) for sweets, chocolate crisps etc.
Brett: I'm going to the shop, d'ya want anything?

Matt: yeah, bring me back some gak...
by smilash July 01, 2009

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