The real McCoy

I never knew the " Real McCoy" had so much history in its use throughout history. "The real McCoy" is an idiom and metaphor used in much of the English-speaking world to mean "the real thing" or "the genuine article", e.g., "he's the real McCoy". The phrase has been the subject of numerous false etymologies. https://en.wikipedia.org/wiki/The_real_McCoy http://www.snopes.com/language/eponyms/mccoy.asp @