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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.
by Correct July 18, 2003
21 33
To spurt, shoot and or secret semen from the penis. As made popular by Nickleodeon's show Double Dare.
Oh, look at that, you got gak all over your mom. Good job!
by JayMoore November 17, 2010
1 14
Yukky, icky, nasty, eww, bleck
Yuck. Don't ever send anything like that again! Hacktooie, gak!
by some stranger February 20, 2008
2 15
A noun used to describe the smell that is produced by a person that has terrible B.O., mostly arising from their ass crack, that is bad enough to make you gag.
Also can be used as a verb in the same way.
Phew, that guy has gak.
Your B.O. makes me gak.
by Beckerson December 06, 2007
2 15
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
53 66
Slang for the description of something dirty or undesirable.
I'm not wearing that shirt, it's gak.
by Olis June 02, 2005
5 18
VERB Take without permission, usually from someone else's blog or live journal.
John liked the new quiz on Maria's blog so much he decided to gak it.
by jes December 03, 2003
14 28