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14.
Gak
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
 
1.
gak
Speed, meth, twick, crank, methamphetamine, Desoxyephedrine.
Ack! we're out of gak.
by Gakster October 22, 2003
 
2.
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
 
3.
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
 
4.
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
 
5.
Gak
The Bronie's kryptonite.
"GAKGAKGAK"
by BronyPony November 30, 2012
 
6.
A person that hates complainers.
I was bitching, then that Gaks told me to shut up.
by The One You Love to Hate July 10, 2009
 
7.
gak
A word used in central Scotland (Perth and Kinross, Fife, Stirlingshire) to describe an unsociable and annoying person. Synonymous with 'dick' or 'twat'.
Person A - "You know that John guy?"
Person B - "Aw yeah he's an actual gak, he needs hit."
by Your Maw's Maw December 22, 2012