it doesnt.
as you know slavery existed and its very disrespectful to use that slur since it was what other people used to call their slaves. only blacks can say the n-word because they are the ones that have that history of being enslaved. not your history, not my history, their history. its not a joke, and its not funny to say the n word because of a dare of being you think its cool. its foolish and a act of racisim. its like calling a gay f*ggot. its a negatively categorizing term that ONLY BLACKS, HAVE THE RIGHT TO SAY.
so dont pretend like you have the "pass" because you dont.