gack slap

To ejaculate while slapping someone in the face with ur dick. Commonly used when black people are fighting over koolaid or other commonly used black stuff.

'I was fuckin this chick when i was at bj bell and then my friend yelled at me so i gack slapped his koolaid.'(gack slapped while koolaid is involved.)

by THAT1GUYFUCKINurmomW April 25, 2010

Gack

The first retching sound a cat makes when it hacks up a hairball.

I heard Morris gack after giving himself a tongue bath.

by the_great_waldo October 21, 2009

gack

Methamphetamine. Used to describe the gag reflex which can be triggered by the extreme burning sensation of the nasal passages and bitter taste of meth when snorted.

Ever seen the movie, "The Salton Sea"? There's a character called Poo-Bear who snorted so much gack that the doctors had to cut off his nose.

by grandpa July 13, 2003

glacicurriculaphobia

Morbid fear of that last crucial copy of your CV/resume being ruined by a splatter of melting ice cream.

Serious case of glacicurriculaphobia here; keep the CV safe.

by Fearman November 22, 2007

gack

To discharge some kind of fluid from the mouth, either phlegm, mucus or vomit.

I had a coughing fit and gacked out a lunger the size of my hand.

by amno February 13, 2003

gack

Crank, lower quality methamphetamine not the higher quality crystam version but the stuff that is brown some times and burns like hell. There are 2 types of gack. One eye and two eye. One eye refers to the burning pain and tearing in the eye after snorting. Two eye gack makes both eyes burn and water from snorting it in one nostril.

"I did some gack last week and I still feel like shit!"

by PharmaPharmer December 30, 2004

gack

Where I come from, Gack always refered to the residue left over from smoking bongs or buckets.

Gack was scraped out of the cone or the bucket 'head' and ususally chucked in an ashtray. However, those on the dole and rather skanky used to smoke this gack by wiping it on a rizla.

They were known as gack heads. Nasty.

"Duuuude, take a lug on this..."
"Err, no fanx - it's full of gack!"

by Powdermonkey May 28, 2006