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15.
Original Granny- Old ladies of the future with tatoos & listen to rap music.
Our Mom is the O.G.
by Aunt Wild & Aunt Tess October 06, 2011
 
16.
OG
Stands for "Original Gangster".
That girl Casey is an OG right there!
by C-swizzle fo shizzle November 06, 2010
 
17.
o.g
Abbreviation of Original Gangsta. First used by Ice T, with his 1991 album "O.G original gangster", and later adopted by gangsta rappers to refer to an old gangster.
Stupid gangsta rapper: I'm THE o.g
Smart underground hip hop artist: No gangsta can be original, they are all the same.
by Shakmaveli June 09, 2010
 
18.
OG
Original Google - Someone who is intelligent or well informed, who is at least 20 years older than Google.
” So who do you think would win Who Wants to Be a Millionaire, Ken Jennings or Brad Rutter? I don’t know I think both those OGs have a real good chance of winning the money.”

Google BG
by Polymath July 10, 2014
 
19.
OG
Overly Gay

Someone that Over usess OG and names them self an OG.
OG can only be given to someone by a group of people that are thier peers.
That gamer can't be an OG he named him self an og and he is less then 30 years old maybe he is an OG - Overly Gay
by HotShotKev February 17, 2014
 
20.
O.G. is an acronym standing for ORIGINAL GANGSTER. people and things can be described using O.G. as an adjective. it is almost always associated positivley.
shit, that ninja turtles digital watch is O.G.!

that N.W.A joint is so O.G.
by 415beez May 28, 2006
 
21.
OG
Older Girl. Similar to LG: little girl. but if you are a little boy and you are going out with and older girl
Dude, are you going out with an OG? niceeeee!
by poopismylife May 17, 2011