Yesterday I was reading through one of Todd's picture books-- the one with all sorts of modes of transportation-- various trucks, planes, boats, etc...
At the end was a little quiz-type section, where answers were covered by flaps with a question and picture on it.
For example: the flap would say "What goes on water?" with a picture of a fish. Open the flap to get the answer: "a boat".
Then we got to the flap that said "What flies in the air?" with a picture of a bird on it.
Todd declared: "a bird!"
Mommy: "That's right, a bird. But if you want to fly, what do you use?"
Todd (flapping his arms): "Wings!"
Hmmm... makes sense-- it IS wings, after all, that enable birds to fly, airplanes have wings... so if Toddy had wings it stands to reason that he'd be able to fly in the sky too, right?