Sorry - in this case I would say Bush is an idiot - or a liar! either way is NOT being classy.
You do not show manners by lying about a person - you either simply ignore the question or answer it in a manner that leaves the answer unecessary.
THAT is class!
Clinton is CRASS!
Something to think about: "Keep your friend close, but keep your enemy closer". GHWB is a close eye on someone who needs to be watched; especially with a wife named Hillary.