[AKrumbach]

I like to play with those sort of people by saying that the planets of the solar system are: "Mercury, Venus, Mondas, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Rupert".

While one of those entries is strictly fictional, if Pluto belongs on the list there's no reason to exclude Ceres or Eris (though in the true spirit of Discordianism, I have to stick with the initial, fictional name for the final known planet).