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1 definition by RadioGeno

 
1.
OG
In the 1970s, "O.G." was used to mean "Old Gal". In other words, "yo mama", which could -- of course -- have referred to your actual mama, or your wife, or your main squeeze.
"Hey man, how's yo' O.G. feel about you stayin' out late tonight?"
by RadioGeno June 27, 2005