Have you ever had a pesky stray string poking out of your new shirt or cardigan? It looks harmless enough—just a stray bit of material that accidentally got left over from the manufacturing process. Except, when you go to pull at it, its significance and integrity are suddenly revealed, leaving you looking the fool—with a bit of string in your hand and a gaping hole in your new shirt. That's a great metaphor for what happens when a cheat and a liar finally cross paths with the wrong target and…