Shortly before his 5th birthday, Alex came home with a wiggly tooth.  We asked him if he fell or hit is face in some way.  He said no, but seemed unsure.  It was the first tooth that came in, so we finally realized that it was just the normal tooth falling out process.  A bit of research told us that it was early but not terribly unusual at "almost 5 yrs old."

Recently, his second tooth fell out.  The first time he bought a yo-yo with his tooth-fairy money.  Now he says he's saving up for a convertible.