Someone who thinks being a "gangsta" is cool, but is really a pathetic loser who should be fed through a chipper into a compost heap for selling crack to little children and robbing old ladies etc..
Not to be confused with "gangster", which comes from the Mafia who have at least a small amount of honour.
Mike thinks he is a gangsta, but we all know he likes to be sodomised by his father.
Eminem thinks he is cool, but a chipper awaits him.
We don't have a chipper big enough for all the gangsta rappers in the USA - Somebody get us a mechanical engineer to design us one!!