Slang phrase nigger from the woodpile "a hid motive or mysterious variable affecting a scenario in an adverse way" [OED 1989] is attested by 1800; Thornton's "American Glossary" (1912) defines it as "A mode of accounting for the disappearance of gasoline," hence "an unsolved secret.In summary, the use of the word "Niga" isn't appropriate, no matter