At bedtime, after B had lost a tooth.
Dad- Let’s see what the Tooth Fairy leaves you.
B — What is the Tooth Fairy?
R, now wiser after his own experience with the Tooth Fairy — She leaves you money.
B, worriedly — What?!
R — She takes your tooth and leaves you money instead.
B — Why does she take my tooth?!
R — So you can get money.
Mom — Don’t be scared, B.
R, who is obviously wise to the fact that “the Tooth Fairy” is really Dad — Yeah, don’t be scared, B.
Mom — Do you know who the Tooth Fairy is, B?
B, upset — No! I’ve never met her!