by amno February 13, 2003
by bww13 December 05, 2010
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.
by PharmaPharmer December 30, 2004
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.
by goo goo the magical elf November 10, 2010
by the_great_waldo October 21, 2009
by UpNextVanillaSwirlOnThePole March 09, 2017
When you fuck your bitch so hard that her pussy makes a farting sound much like the nickelodeon puddy like material "gack"
by ScuryJerry January 15, 2006