When you want to just scream Nigger into a crowd but don't want your ass beat. You can scream Neeeyaaahhhh instead to imply you're screaming Nigger but can then just pretend that you didn't and tell everyone you just screamed some jibberish.
Friend 1: Man, there is like 200 people at this conference.
Friend 2: Yea and look at all these Black people.
Friend 1: Neeeyaaahhhh!
Friend 2: Ahahahahaha