GAK 

The sound you make when you hurl.

I’m gonna throw u- *GAK*

GAK by ranboodrowning's biggest fan August 28, 2021

gak 

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!"

gak by Jay Skathe October 1, 2005

gak 

Movie crew blanket terminology for any film items or equipment.

The Grips left all their gak on set again.

gak by Dave Walker June 12, 2005

Gak 

A old guy who plays a gum leaf to attract children to his white ford falcon to rob them of their childhood!

Backs to the WALL!
Gak's on the PRAWL!

Gak by Penis Pal May 17, 2008

Gak 

The Bronie's kryptonite.

"GAKGAKGAK"

Gak by BronyPony December 5, 2012

Gak 

verb: To retch or vomit;throw-up,spew or hurl
noun: The leftovers or by-products of vomiting. Vomit. The regurgitated contents of the stomach.

When I saw the sore on his hand, I was so grossed out I thought I would gak.

Gak by Correct July 18, 2003

GAK 

One who does things for no apparent reason, without understanding their situation.

A formal greeting among friends

Someone who has what we call "Sugar tourettes", on a sugar high and says things at random

Friend -Hey jeff i heard you were planning on studying later with jamey right?
Jeff- GAK!

Hey jeff whats up? GAK!

Hey jamesy poo, i got you a valentines day present. GAK! SHAMAGALA

GAK by Mysterious Jeff February 12, 2009