I think by the old definition, nigger just means one who is without knowledge and if someone told me "you dont know jack" I could see myself getting a bit offended by that notion. (Depending on the topic of conversation of course.)
were they to call me a Nigga'
then I could deal, cuz' thats just how I roll, fo realz. (Yea', too much time in Saint Louis...)
But really, it's like when a Bible thumper calls me a Heathen, I let it roll off cuz I for one know I spend 0% of my time sitting on some dusty old hearth.