Slang phrase nigger during the woodpile "a hid motive or not known aspect impacting a predicament in an adverse way" [OED 1989] is attested by 1800; Thornton's "American Glossary" (1912) defines it as "A method of accounting for that disappearance of gas," for this reason "an unsolved thriller.The slang expression "Niga" is really a really offensiv