Worse than a Negative Nancy, or Debbie Downer. This person is excessively negative, even during the happiest of times. They find themselves completely incapable of being positive. Some might call them pessimists, but they are much worse. They seem to be addicted to negativity.
My hubby is the biggest negaholic EVER! I surprised him with a new flatscreen tv for his birthday. Instead of smiling and hugging me, he instead frowned and asked how much I spent on it since he was planning on buying a new hard drive for his computer with our extra dough. Then he frowned some more because he realized he was another year older.
One who cannot stop saying the word "Nigga" descriptively in normal conversation. This does not apply to one who uses the derogatory word "Nigger" in general conversation. That person is a "Racist" not a "Niggaholic". Origin: Comedian,Paul Mooney on "Keith Olberman's Countdown" referred to himself as a recovering Niggaholic, meaning in the past he used the word frequently but, currently doesn't use it anymore.
Example common sentence used by a "Niggaholic": (What up Nigga, did you see that Nigga last night, at the Nigga spot, Niggas were actin' up on some ghetto Nigga shit!).