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!

gack by johnireland November 18, 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

Gack 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....

Gack by goochy goochy March 17, 2017

gack 

to kill someone, something or some idea.

imma gack dat be-yotch!

gack by Nietzche July 1, 2003

gack 

the hard crusty substance found on a mans used underpants

Deirdre: jesus john, the gack on your boxers! no way i'm riding you now!!!

gack by Griffin.vsMcCahill November 18, 2007

gack 

verb: to choke under pressure.

He would have taken the lead, but gacked on a 2-foot putt.

gack by R. Snot August 29, 2003

gack 

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.

gack by BrightApollo March 7, 2003