gack back

Used to describe back pain due to extensive slouching while using crystal meth and/or blow.

"Damn, my gack back is killing me."

by AnonymousTweaker August 23, 2021

Gack

Gack also spelled gach is a word to be used when something is gross unpleasant weird strange or nasty started being used in Ireland 2015 and has grown to a common word

It is a great word to add to your vocabulary

Gack

Ew that meat is gack

I saw jo pick his nose, ew that's fucking gack

That's one big spider that's so gack

Your such a gacky person

by Degreeinbruh September 1, 2017

Gack

The term “gack” refers to someone who wants to have hot steamy sex.

Gack! Let’s go to your room.

by ProfessionalDictonary September 26, 2021

Gack

A Synonym Of Back, Can Be Used In any Situation, However, Do Not Confuse This With The Adjective Gackful, Which Can Mean "Best, Great, Good"

"Man, Its so Democratically GACK"

by Myballsitchmore December 12, 2024

Ash got Gack

Ashley aint cleanin her cooter and booty hole properly sooo, now she got sticky shit in the region in between.

Kayla: Yo Ash got gack
Person: Ew tell her not to get that on my car seats

by hayley1708 May 24, 2018

gack

a person who can’t handle his alcohol and prefers overweight women

oh no thats his 5th beer, he will probably be a gack and try plug a fatty tonight

by handlemart42 July 24, 2023

gacked

to be fucked off acid

"oi conor"
"cunt im gacked"

by joeysmatekevin September 27, 2018