29
The unknown fluid or mass created as a result of decomposition.
Dude, you gotta bury that roadkill. That gack is starting to run down the hill.
by BrightApollo March 07, 2003
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30
He would have taken the lead, but gacked on a 2-foot putt.
by R. Snot August 29, 2003
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31
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!
by Psionics November 17, 2004
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32
food that sticks to the roof of your mouth, also the process of food getting stickier the more you chew it
"this food is really gacky"

by James 26 November 17, 2005
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33
A man or women's discharge I.E. His or her cum.
I gacked all over her.Or she gacked in my mouth...
by cath boys June 28, 2006
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34
Get your Gack out!

My Gack smells fishey
by Jacko September 23, 2004
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35
Would you like go g'ack home this weekend?
by Brian April 12, 2004
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