Top Definition
short for gods anti son of a bitch machine a small group of young men located in the hills of fallbrook involved in the underage alcohol trade,smoking, manufacturing explosive devices and robbery.
yo did you see those guys from GASOBM they straight ran in jacked 15 bottles of vodka and bounced

watch out that mo fo from GASOBM has more bombs in his garage than al qaeda
by AHNFEPOUERP1357 October 13, 2008

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