Did you know nigger and nigga stands for and is a short form for "negation?"  This could be why rappers are saying it and their rapper friends are laughing about it as if it is a term of endearment but words are powerful; innit?  Nuh True?  It is also rather unusual!  Some people seem to want to hear it but what is their sin? What is it that they wish  to achieve in negating themselves and their own family?