I think SBPH reads the AA board, secretly:
"When Chad asks a black person “why can’t I say ‘n-word’”, 95% of black people reach their boiling point IMMEDIATELY. Contrary to popular belief, though, a black person who reaches his boiling point will usually not shoot you, shank you, or date your daughter…he will simply shut down intellectually. A blank, idiotic look creeps over his face, after which he will try to give you a response, but the words simply don’t come. He shakes his head and walks away exasperated, leaving Chad with the mistaken impression that he has a good point."http://stuffblackpeoplehate.com/2008/08/29/n-word/
ETA: Clearly that link is broken, because of the censor. So think of the word that n-word is replacing, and put that one into the url instead.