P.S. - at the bottom is a flea. By the end of the story, every
  character was saying "Yea!!" - Evil Robot said it menicingly,
  circle guy said it happily - but the one who started it all -
  was the flea. It was such a loud "Yea!" that it blew up the
  world and everybody was floating in outer space. Never
  underestimate the creativity of kids. Their inner world is more
  amazing and complex than we can possibly imagine. "