I lived in a tiny town where the candy store owner was best friends with the only dentist. There was a running joke in the entire town that the two of them were plotting to get rich off everyone.

He smacks you with a great shout. You feel glove slapped like a duel challenge. Then he offers a small tub as you feel the tooth slip from your jaw onto your tongue.

Aktshually it seems like a very uneffective method.