My friends daughter heard about the tooth fairy and said "I don't think we should give her more teeth until we have figured out why she wants them, what is her plan?"

The fey only bargain, they do not take. Not even from the dead.

The Tooth Fairy wants fresh teeth.

I like Pratchett’s take. The Tooth Fairy of the Discworld takes the baby teeth and hides them in his domain because pieces of a person can be used for sympathetic magic, like cursing someone, and he wants to protect the kids from that.

Contractual obligation, teeth must be given with the owner's consent.

Just say they're banned from graveyards, because they pulled that shit all the time without burying them again. You need to stay consistent and plausible with those lies. 😉

What's to say that they don't? And they're just greedy for teeth.

They want baby teeth.

Because they don’t have shovels obviously.

Just pliers.

Honestly, this is a golden teachable moment in critical thinking. Jr here is starting to ponder the implausibility of a myth. Encourage more thought, guide away from magical thinking, answer their questions honestly, and reward them for arriving at better answers. Then follow up with a big reward as they'll probably feel a tad disillusioned when it's all over.

People don't get it. The Tooth Fairy isn't collecting teeth, she doesn't really even want them. She just has the ancient job of giving kids the traditional bounty for teeth. She just tosses out the teeth when she gets home. She's ain't going to the trouble of digging up people for their teeth. She's got more than enough to handle already.

Something, something, fresh teeth.

...question about beavers?

Edit: just scrolled and seen your other post lol

The people are only dead because they refused to keep giving the Tooth Fairy their teeth, so (s)he killed them but will honor their wish in death.

War criminal tooth fairies did that, in the second world war, for gold teeth.

How do people think tooth fairy makes money?
By collecting gold tooths of the dead of course.

This is why we put bodies in boxes!

Why do you think there's dirt on your window sill after the tooth fairy visits?

My kid and I had a conversation about this. I said it was weird a little fairy was flying around with a huge sack of kids teeth, like wtf was she doing with them? Pretty disgusting. We don't trust the tooth fairy.

The tooth fairy can go where it wants, and can see in the dark. Why would it need to dig them up?

They do unless there is a bone fairy around.

They probably have to be reasonably fresh