Last night I had a few lines, and I was totally gacked.
by Theone December 30, 2004
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Any amount of useless or unwanted stuff (usually regarding possesions)
I've got too much damn gack in my attic. Guess I'll throw something on ebay.
by mudpup April 5, 2006
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something that is in a manner of being fucked up or wasted
"we got so gacked last night"
"after the burnout, the car was fully gacked"
by ebony.anne September 24, 2018
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the be under the influance of methanphetomine
by jameshandpenis February 11, 2011
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1.A term used for the Drug Crystal Meth Amphetamine

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!"
by L8Nighter March 2, 2011
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To steal from someone else. Used often in blogs and such.
"I totally gacked this picture from Amy's site."
by Anonymous November 9, 2003
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The sound made by an individual who is in the process of sucking dick. Typically a gagging sound made from the throat.
Brenda gacks on that niggas dick because she has a terrible gag reflex.

That chicken head is always gacking choad in the park.
by Catsleeze September 24, 2013
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