I knew ppl who would say that from time to time to me - drove me
   nuts -- worse than that is hearing "Oh, you *know* what you
   did." Umm... no, - really, I don't. "You -know-, you liar!" -
   ugh. Oh well, you can't convince someone who is already
   convinced. "A man convinced against his will, is of the same
   opinion still". "