I love fairies, but fairies aren't real. Except the tooth fairy.
She lives on Pluto, and she digs holes, lots of holes. And there's WORMS! Lots and lots of worms.
And she goes through a lot of teeth.
So she comes and she gives you money for your teeth.
And she digs and digs.
Two things you need to know-
First, they recently saw The Lion King 1 1/2 about Timon and Pumba. Their favorite song from the movie is 'Dig-a-Tunnel'.
Second, I'm pretty sure she means that the fairy uses the teeth as shovels to dig in her tunnels, not to replace the ones in her mouth...