gak 

Speed, meth, twick, crank, methamphetamine, Desoxyephedrine.

Ack! we're out of gak.

gak by Gakster October 22, 2003

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

gak by Luca November 19, 2003

Gak 

popular slang word for coke or blow.

Man, let's go line up a couple of phatty gakkers bro.

Gak by SlipStream May 17, 2003

Gak 

Used by King Princess (real name Mikaela Straus) an openly gay singer/songwriter and her fans. Means gay, fabulous, amazing etc.

An adjective that applies to almost anything deemed positive

“Really? That’s so gak!”

Gak by I Stan a queen February 2, 2019

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.

gak by Dameon Jackson January 17, 2005

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.

Gak by China White April 2, 2003

Gak 

Term used to describe puking or to say puking

The pile of poo make want to Gak

Gak by Darkos.exe July 12, 2021