Gak
1. random word to shout
2. don't have anything to say? say GAK
Guy 1-walks through door-

Guy 2:Hey what up?

Guy 1:GAK!!!
by AWESOMEGAKCONSOLIABLE August 27, 2008

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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!
by Penis Pal May 17, 2008

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Gak
A thick mucousy pocket, burped out of the vaginal opening. (Usually a thick 'army green' colored content, sometimes with redish brown flakes or deposits strewn through out.)
An aroma filled the small office cubicle that Pat shared with Dawn, once the pocket of 'Gak' had forced its' way out of her, popping when hitting the floor.
by Drew G-PHD April 07, 2008

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Gak
Someone who's septum erodes due to snorting too many drugs. Also a nickname for cocaine itself.
Ha you can tell that gak's had a bit too much coke!
by S:RM January 26, 2008

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gak
the action when you make a face of disgust when the drips from snorting cocaine starts to go down your throat. if you dont clench your throat, and you let it down, you get the nastiest feeling in the world
person 1- snort!!!!!!!
(about 2 minutes later)
person 1- ewww gak! yuck!
person 2- yup, gotta love those drips
by danman12791 December 15, 2007

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gak
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

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1) Usually a form of displeasure, as if someone were to yoink the last chip and leave you with nothing

2) The funny sound people make RIGHT before vomiting.

(1a) "Gak! That's my chip bitch!"

(2a) "Oh man... GAK! (hurk)"
by Zhunter March 14, 2007

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