When 6-year-old ROBLOX players try to type in "oof", but they type in g since it's right beside f, but they send their message anyway because they didn't check for spelling.

A weird creature in City of Heros that spits snot at you.

Oog is a confused oof/gag. Commonly used as a response to an unexpected, weird and uncalled for statement/occurrence.

What a caveman says, usually in excitement, rage, or confusion.

Original Original Gangsta:

The first gangsta's in the hip-hop/rap game. Mostly before the 2000's

Based on the pursuit of personal info by fellow internet users beyond what is normally acceptable by a user under the handle "Oogie". To "Oog" indicates any act beyond what is socially acceptable, or any act closely resembling stalking, that involves stockpiling information on other users in an effort to gain data on their personal life.