gacked

"taken from", used to credit the source of material copied from one internet site to another, primarily used in blogs

"I gacked this meme from <maddog>"

by sheherazahde January 5, 2006

gacked

a person that has just finished smoking cristal meth

by Anonymous April 3, 2003

Gacked

How one might describe themselves while under the influence of methamphetamine.

Granny is inside gacked out on that tweak.

by Themethking September 25, 2018

Gack

Dick, in particular an erection.

Billy whacked his gack in class the other day, and I could never see him the same way again.

by El ritardo June 24, 2018

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 22, 2009

Gack

Uranium by product and gouda cheese mixed together to create the one and only gack. Gack has the ability to be a tasty afternoon snack or can also perform shit rockets. shit rockets will expel chunky poo from your bum at speeds exceeding 200 mph, it will, rip your rectum in half.

WOW! I ate gack last night! and it blew my ass in half!

by goo goo the magical elf November 11, 2010

Gack

When your girl...or guy(it is 2017)...gags on your dick

I don't care that Kaia is his girlfriend. Imma gack Dylan tonight at 12:04.

by UpNextVanillaSwirlOnThePole March 9, 2017