Slang phrase nigger inside the woodpile "a concealed motive or unidentified issue impacting a condition within an adverse way" [OED 1989] is attested by 1800; Thornton's "American Glossary" (1912) defines it as "A method of accounting to the disappearance of fuel," consequently "an unsolved mystery.In summary, the use of the word "Niga" isn't suita