1. old gangsta
2. a has been, worn out street fighter.
Yo, look at that Old G, he cant fight anymore, hes played out.
by Alz February 26, 2005
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The derogatory term "Old G" is usually used to describe an old woman.

It is an widely believed to be an abbreviated form of "old grandma" or "old ghastly".
by HiTmAN December 26, 2003
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