Gack

A noun used to insult anyone that looks, talks, or acts like a dork.

OMG, don't let Stewart come with us tonight, that dude is a fucking gack.

by Richard Huang November 06, 2004

gack

The browny black substance found inside a firing tube after a big mix has been smoked through it,It smells terrible and stains lips, clothing and fingers

John smoked a massive bong and got serious gack on his lip.
The bong was covered in gack

by erbivore198999 February 25, 2009

Gack

A Gack is any item (other than a bottle opener) which is used to open a beer bottle. This applies only to bottles filled with beer. Soda, juice, de-alcoholized beer etc. do not apply. It must also not be a screw-off bottle. Due to the skill involved, a person who is rather adept at using various items to open a beer is referred to as a Gacksmith.

My buddy Todd is a real Gacksmith. He can make a Gack out of anything!

by woodfella February 15, 2009

gack

Term used by live and recording soundmen to describe old and broken audio equipment

Take that out of the rack and put it with the rest of the gack in corner

by R Caron December 05, 2003

gack

gack is a word meaning unpleasant repulsive disgusting hideous nauseating can be applied to ppl food drink music and pete doherty!

jesus look at her shes a pig shes gack!!
this lasagne is gack who th hell taught you to cook??!!
pete doherty is gack!

by johnireland October 26, 2007

Gack

Cum sperm when shot on the floor you might need a mop to clean it up cause bella ant doing it

i let him shoot his gack on the wall not me cause i am bella

by Jukebox January 21, 2008

Gack

A stretched wide pussy that looks like she accidentally spilled a warm pie all over her lap. It is could also be used as a vacuum cleaner to suck up the entire universe if needed. Anything that fucks that Gack most likely be terminated from inside. Watch out because once you go Gack you don't come back.

Guy 1: Bro... don't go near ashley

Guy2: oh shit why...
Guy 1: because she's got a gack i could see her sucking up people a mile away.
Guy2: oh shit....

by goochy goochy March 18, 2017