I once asked “Mr. Duke,” everyone referred to him respectfully as “Mister,” if he was ever concerned about some smart-aleck “nigger” calling him while pretending to be white. He replied, “No, I can always tell when I’m talking to a nigger.” When I asked him how he could tell, he said the following: “Take you, for example. I can tell that you’re a pure Aryan white man by the way you talk, the way you pronounce certain words and letters.”
