Slang phrase nigger in the woodpile "a concealed motive or unidentified factor 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 that disappearance of gasoline," as a result "an unsolved secret.In summary, using the word "Niga" isn't suitable, regard