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3.
adjective describing some one who is strung out on meth

oklahoma white trash vernacular
Shark was gacked, so I got the hell out.
by Orville Blick April 22, 2005
83 51
 
1.
To be under the influnce of crack or cocaine.
Dude me and my friend bumped an 8-ball last night...we got so gacked.
by *k!nG Br@nDoN* March 08, 2005
129 63
 
2.
to be gacked is to be under the influence of methamphetemine
as in "I was so gacked last night that I took apart my vcr and cleaned it now I can't gety it back together"
by jon thomas (chipper-shredder) January 25, 2005
96 33
 
4.
High on Cocaine.
Last night I had a few lines, and I was totally gacked.
by Theone December 30, 2003
55 30
 
5.
extremely high and lacking in cooridnation skills or natural grace. Developing temorary speech impediment or just a low volume mumble.
"Too much amphedamines and three days of sleep deprivation has got me straight gacked yo."
by Heather j November 06, 2006
29 19
 
6.
the be under the influance of methanphetomine
manda is saa gacked atm
by jameshandpenis February 10, 2011
17 17
 
7.
"taken from", used to credit the source of material copied from one internet site to another, primarily used in blogs
"I gacked this meme from <maddog>"
by sheherazahde January 05, 2006
35 37