the be under the influance of methanphetomine
by jameshandpenis February 27, 2011

1.A term used for the Drug Crystal Meth Amphetamine
2A some what derogatory name for person under the influence of crystal meth.
2A some what derogatory name for person under the influence of crystal meth.
1. "They just smoked a fat bowl of gack."
or Thats some killer Gack!"
2. "That guy is a total effin gack." or "Quit being such a gack, your going to get us busted!" or "Never bring that gack over to my house again!"
or Thats some killer Gack!"
2. "That guy is a total effin gack." or "Quit being such a gack, your going to get us busted!" or "Never bring that gack over to my house again!"
by L8Nighter March 17, 2011

by Anonymous November 8, 2003

Similar to "dummy text", "text filler" or "greeking". Gack is anything used in a design as a temporary place holder before being replaced by an actual design element. For instance, filling columns of text with "Lorem ipsum dolor...", or using a textured box where an image or other design element might go in a layout.
Gack can also mean something in an image or design which serves a technical purpose that is intended to be removed in the final product, such as tracking dots on a plain wall being filmed, or a wire harness on an actor that needs to be painted out.
Gack can also mean something in an image or design which serves a technical purpose that is intended to be removed in the final product, such as tracking dots on a plain wall being filmed, or a wire harness on an actor that needs to be painted out.
"We need the actual text so we can replace the gack in the layout before sending it to print."
"The VFX Artist will have to paint out all this gack that is in the shot before it can be used".
"The VFX Artist will have to paint out all this gack that is in the shot before it can be used".
by Andy Somers December 15, 2018

"taken from", used to credit the source of material copied from one internet site to another, primarily used in blogs
by sheherazahde January 5, 2006

by florimell August 9, 2003
