And I said, "" Kids, really quickly — I woke up this morning, I decided I wanted to be able to jump over a house — nothing too big, two or three stories — but, if you could think of any animal, any superhero, any cartoon character, anything you can dream up right now, what kind of legs would you build me? "" And immediately a voice shouted, "" Kangaroo! "" "No, no, no! Should be a frog!"