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OBM, aka Tha OBM, aka Tha One Blunt Mafia:

The most badass group of motherfucking gangsters Upper-Middle Class Nassau County, Long Island has ever seen.

Formed out of the ashes of the One Blood Mafia, the new OBM runs shit, son. Stay high like it's nobodies business, mofucka.

"Stay High"
- Darkness himself
Throw yo' obs up skyhigh
we rollin OBM till the day we fuckin die
by OBOSS STATUS June 09, 2009
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Old Black Man. Elderly African-American gentleman who drives an old Cadillac, sits on the porch with his OBM friends talking about the good old days when kids respected their elders and didn't hang on porches and street corners like they do now, has a raspy deep voice, looks a little too long at young women passing by, and smells faintly of cigarettes even though he quit years ago. Often seen wearing an old pair of pants, buttondown shirt and a Kangol.
When I brought my girlfriend home with me after school one day, my grandpops and his OBM friends were sitting on the porch playing checkers, looked at her, and slapped me on the back.
by Vaitara April 05, 2010
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