Original Gangster
90s gang affiliated rappers called themselves "Original Gangsters" or "OG" for short. It's a title for real, actual crime and gang affiliated gangsters. While a lot of black young men in the 90s called themselves gangsters a lot of them didn't commit any crime of even was a part of a gang. The term Original Gangster is less common today, mostly because the limitations of lyrics today, but Original Gangsters are still a thing.
Wannabe: Ayyyyy Imma shoot yo ass
Original Gangster: Shut the fuck up