This morning, our son lost his baby tooth for the first time. It was a lower one so he have to throw it over the roof of the house. It is a sort of ritual in Japan to do that. Sooner or later the upper tooth will drop, then he have to bury it under the basement of the house. The problem is that we are living in a room of a condominium, and there are no roof or basement we can reach. We will do that at his grandma's house before long.