Someone so high on meth they move uncontrollably. This usually includes wildly exaggerated leg ,hip, arm and butt movement that often look like their moving to some unknown beat and looks like very much like the dance the Elaine character on Sinefeld does.
by Kris burkholder June 08, 2017
by Old Moore's Balzac December 10, 2022
*Cheryl kissed him*
Simon: Gack! Get your disgusting lips off of me, pig!
Cheryl: Why?
Simon: I found out you hated anime.
Cheryl: You meanie!!! *cries*
Simon: Yeah, get the fuck out and sob all you want!
Cheryl: Cartoon porn addict!!! *continues crying*
Simon: Gack! Get your disgusting lips off of me, pig!
Cheryl: Why?
Simon: I found out you hated anime.
Cheryl: You meanie!!! *cries*
Simon: Yeah, get the fuck out and sob all you want!
Cheryl: Cartoon porn addict!!! *continues crying*
by Matt_The_Anime_Man April 24, 2020
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
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
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 01, 2017
by CreatorOfGack May 05, 2021
by handlemart42 July 24, 2023