Top definition
A Hardcore Crew that was started in Houston Tx in 2002.
It now has chapters all over the nation including Brazil, and Mexico.
The 2nd G.A.M.C. Bar-BQ is this weekend, are you going?
by A. Hooliagan February 22, 2008
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2
The poker run was sponsored by the GAMC.
by Sneaky69 June 06, 2006
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