The Patron Saint of Toothlessness

Fiona is going to be 7 next month, and she has not lost any teeth yet.  While this seems inconsequential to us (I mean, it's gonna happen), it seems to be at the forefront of all her thoughts lately.  ("Mom?  Feel this.  I think it's wiggling."  Hard as a rock.)

TODAY'S TOOTH CONVERSATION:

Fiona: "Mom?  Why does the tooth fairy want our teeth?  What does she do with them?"

Me: "I dunno.  Maybe she makes jewelry out of it."

{pause}

Fiona: "I don't think so."

{pause}

Fiona: "I think she uses them to make new teeth for people who need them."

Me: (thinking, "Wow, really?  Dentures?")

{longest pause, Fiona begins to chuckle}

Fiona: "What if after I lose these teeth, we see [insert Anonymous Toothless Neighbor's name here] with them in his mouth???  Like, he smiles and says, 'Hi, Fiona.  Look at my new teeth!'  And only I know that they used to be mine."

Me: (laughing so hard I can barely breathe, as I imagine [insert Anonymous Toothless Neighbor's name here] with proud itty bitty baby teeth in his mouth.)