gacked

adj. something that has become so corroded or gummed up with a substance that it is both visbible and fairly disgusting.

The inside of that bowl is so gacked you could sell it.

by aksarah August 25, 2003

Gack

A really nasty substance. Like ear wax, saliva, boogers etc.

"Dude! Your ear phones are full of gack!"

by PaleteroJ March 27, 2010

GACK!

A word or sound muttered/or written by Professors of Anatomy and Physiology when proper terminlogy is not used. Also used un situations of extreme exacerbation.

Student Answer: Gluteus Med.
Professor Commentary on test: GACK! This is not proper terminology.

"GACK!, be quiet now! Or I will leave!"

by Rojay December 1, 2006

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 6, 2004

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

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