What you don't know is, that is not my hat, that's ME! See those nasty spots - you know what that is don't you? Come any closer and you'll get it too. You don't want to be staggering wearing a warning sign, ringing a bell, calling out 'unclean, unclean', do you?
A good point we both don't know so it must not need knowing! If you don't know than I most certainly could not know. I have heard that the nose knows. Maybe we should ask our noses if they know. Then, we might all know.
Overall, I'd love to know. Please let me know when you know. This way we will be "in the know" together! Big Winks and Smiles!!