The noise that animate objects make when you sharply grab their neck. Most commonly found in birds and humans.
Father: Go ahead and grab it son.
Son: Ok.
Little Boy: gaaacck
Son: Haha! This is fun.
Little Boy: *gasp* aack gaaah!
Son: Ok.
Little Boy: gaaacck
Son: Haha! This is fun.
Little Boy: *gasp* aack gaaah!
by Psionics November 17, 2004
Get the Gack mug.food that sticks to the roof of your mouth, also the process of food getting stickier the more you chew it
by James 26 December 28, 2005
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Get the gack mug.derogatory term for cunt
by Jacko September 23, 2004
Get the Gack mug.Very good marijuana bud. A superior strain of cannibus that has been found on display at the cannibus cup at least twice.
I got the GACK y0. y0y0 I'll give you 5 oz. of this gack I just got from vantown for a grand and a blowjob from your gf.
by Seattle (Big A) May 1, 2005
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