A person who tries to act like a gangster or "gangsta" but is really white. Similar to a wigger, but slightly less offensive.
White guy 1: I'm straight up gangsta, bitch. I'll fuck yo' ass up. Don't fuckin try ta play me.
White guy 2: Dude, you're such a wangsta.
White guy 1: Wha' the fuck you talkin' 'bout nigga?
White guy 2: look it up on Urban Dictionary... *walks away*
A wangsta is anyone that attemps to emulate "ghetto culture." These people will often travel in groups and harass or hang out with younger kids. They wear backwards hats, basketball jerseys, and have serious rap battles with their "homies." They are generally white, but can be of any race and gender. People also often tend to dislike them, but they don't know it and continue to act unpleasant to the point in which outcasts wouldn't bother with them. A lot of them are similar to ricers.
Example 1:
Jimmy: Yo man, check out dees rims. They're custom on mah low rider.
A wanna-begangster that wears his pants way too low. Has no guns, no weapons. Thinks he's cool but he has no life at all. Hangs out with other wangsters.