Is there anything worse?

Than that feeling you have after visiting the dentist, and he has replaced two old fillings with new ones, but in the process has administered a local anaesthetic to half your face?

So firstly, there's the slightly worrying suspicion that you're walking around slack jawed and drooling.

But secondly, and far worse, when the afflicted area starts to itch, there is nothing you can do to stop it, the itch seems to come from deep inside the tissue, and you can't even feel your face, so scratching is impossible.

Still, the teeth in my slack, drooling, itching jaw are pretty white right now...

And on the flipside, is there anything better than that feeling when you suck cold air through the newly cleaned gaps between your teeth? "Sffftttt!"

Although that feeling would be better if I could feel my lips.