What does OG stand for?

What does OG mean?

OG	Old Git Miscellaneous » Unclassified
OG	Old Gorgeous Community » Famous
OG	Over Grow Miscellaneous » Unclassified
OG	Oracle Graphics Computing » Databases
OG	Ogden Corporation Business » NYSE Symbols
OG	Original Gamer Miscellaneous » Unclassified
OG	Original Guild Community » Music
OG	Oriental Grill Business » Firms
OG	Olympian Gods Community » Religion
OG	Orange Gatorade Miscellaneous » Food
OG	Original Gansta Miscellaneous » Unclassified
OG	Ole Grey Miscellaneous » Food
OG	Optimal Guess Academic & Science » Mathematics
OG	Observational Game Academic & Science » Mathematics
OG	The Ornithology Group Community » Non-Profit Organizations
OG	Order Of Gownsmen Miscellaneous » Unclassified
OG	Original Gimmick Miscellaneous » Unclassified
OG	Oldies Guru Community » Music
OG	Orienation Group Miscellaneous » Unclassified
OG	Operation Girafarig Miscellaneous » Unclassified
OG	Original Gangstsa Miscellaneous » Unclassified
OG	Odyssey Gaming Miscellaneous » Unclassified
OG	Original Glutton Miscellaneous » Unclassified
OG	Old Guyor Miscellaneous » Unclassified
OG	Ookie Globals Miscellaneous » Unclassified