nigga is what only black people say to each other but if a white person say it they better be lucky or better be a fast runner.
black person:was up nigga what you been doing
other black person: nun much nigga how bout you?
white person: wassup niggas?
black people: what you say? and start chasing or threatening white boy or might let him slide that one time.
A word that white people cant say!!!
White boy: ayye nigga!!!
Black person: 'fuck you just say?!??!!!
White boy: Aw, fuck!