Fairies, submarines, and sewers
Daddy (Me): Julia, how much did you get from the tooth fairy the other day?
(The tooth fairy visited the grandparents house where she was staying)
Julia: 1.50 in quarters.
Daddy: Quarters? I have a question. How do you think the tooth fairy flies around to all the kids all over the world weighed down by all of those quarters? Wouldn't she be too heavy to fly?
Julia thinks for a few seconds.
Julia: Well, this is just a theory, but I think she has a submarine that goes through the aquifer or the sewer carrying all the quarters from house to house. That way she doesn't have to fly so far.
My daughter is brilliant, don't you think?