This is an actual conversation I had with Maddie yesterday.
Maddie: There goes bird flying with flapping wings.
Maddie: I fly, I flap wings?
Me: No, you don't have wings, so you can't fly.
Maddie: (Sad face)
Me: Because we are human, humans can't fly, only in airplanes.
Maddie: But I be Tinkerbelle.
Me: But Tinkerbelle is a fairy, that is why she can fly, people can't fly.
Maddie: Oh! Idea! We get pixie dust. We get pixie dust we fly.
Me: (desperately trying not to laugh) That's a good idea but we don't have any pixie dust today.
Maddie: Ok, I go find pixie dust, bye!