In certain social groups, it's come to mean "to kill violenty". Typically by means of strangulation. It can also mean being shot from time to time but the latter is it's more common use. Either way, to be 'gacked' means to be killed violently and or by surprise. But strangely, is almost always used in jest or a playful nature.
by WeeLilFaggot February 27, 2020
Used to describe female pyhsique. Particularly her stomach and breasts. When a female's stomach sticks out further then her breasts. aka (When her gut sticks out further then her rack)
by Rob K July 24, 2006
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 16, 2006
by PaleteroJ March 27, 2010
by Richard Huang November 06, 2004
A Gack is any item (other than a bottle opener) which is used to open a beer bottle. This applies only to bottles filled with beer. Soda, juice, de-alcoholized beer etc. do not apply. It must also not be a screw-off bottle. Due to the skill involved, a person who is rather adept at using various items to open a beer is referred to as a Gacksmith.
by woodfella February 15, 2009
by Jukebox January 21, 2008