The term "nignog" comes from the middle states colonial slang for "black head." "Nig" being from negro = black" and "nog," meaning a type of mug (hence "eggnog," which was served in crystal mugs). Like the word "mug" is still used for "face," the word "noggin" (short form = nog) was used for "head." It was eventually a term for any black person. White Americans use it indiscriminately, often refering to themselves and one another as "nignogs."
by hateashley May 16, 2011