original gangsta... someone who's been there, done that.. knows the ropes...cant be touched by some sloppy girl names dimo for example: Anton Camaj
Anton Camaj is the biggest O.G.
by Antonn September 27, 2006

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Mike Ogulnick, the man with the bushiest eyebrows in all of Chicago radio, now the radio host for the Texas Rangers. The mackest of the mack daddies.
OG is the very definition of a smarmy douchebag.

Most annoying of all, though, is the inexplicable narcissism that defines OG's broadcasts.

MJH were ripping OG because Jurko laid out $200 to buy breakfast for the ESPN staff and OG, upon spying the sumptuous spread, whined that "there's no butter for my bagels".
by Anusface aka Penisbreath November 12, 2009

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an alias for Starcraft. originated when people in starcraft chatrooms waiting to start the game typed GO GO GO. some mispelled and typed OGOGOG instead and word picked up from there.
Do you want to OG?

Lets OG!

Its OG TIME!

OGOGOGOGOG
by OriginatorOfOG September 02, 2009

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Unlike the more commonly used unabbreviated term "Original Gangster", this alternate definition refers to "Original Gypsy" meaning anyone that exhibits prowess in the ways of the gypsy (slight of hand, sticky fingers, trickery, cunning, charming, etc.)
He is such an O.G. (original gypsy), he called comcast and convinced them he was switching to direct tv so they gave him 30 bucks off his bill each month plus 3 months of stars for free!
by O.Gypsy May 10, 2009

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Original Gangsta; the real-life definition of a street-level mentality; no remorse or concessions for a person's (or group's) behavior associated with violence, sex and crime. A way of life, of sorts, that doesn't provide explanations or apologies because this is the "reality" of aforementioned subjects. The rapper Ice-T coined this term globally with one of the defining albums of gangsta rap, O.G. Original Gangsta. O.G. can also apply to a first generation item or family name, i.e. George H.W. Bush = "O.G. Bush"
"Straight OG out of Compton with a loose cannon, smoke big green call it Bruce Banner"
by J_Nasty April 16, 2009

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Word meaning Original Gangster or Original Gangsta
T.I. "I graduated at the streets, i'm a real OG!"
by gboi92 November 30, 2007

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Original Gamer - someone who's been in the gaming industry ever since the dawn of Atari and Nintendo.

anyone who owns an old school game system, such as a Sega Genisis or an NES.
dude, Bob is such an O.G. He has Turbo Graffix games, Magnavox Odyssey, and a Super Famicom imported from Japan!
by El Juegon66 August 06, 2007

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