"My very eager mom just served us nothing"

It just doesn't work as mnemomic device, does it?
The old saying, "My very eager mom just served us nine pizzas" was a great way to remember the names of the planets of our solar system. The number of pizzas also helped you remember the number of planets.
But no more, of course.
I wonder when the last time was that a group of scientists voted democratically against a planet?
It's a bit like a reality TV show, isn't it? "Pluto, you have been voted out of the solar system."
But now that scientists have said that Pluto isn't a galactic playah, I hope that some august body can address another important question: How is it that Pluto is a dog--and the pet of a large rodent, at that--while Goofy is evidently, a person?
And how is it possible for a mouse to have a dog smaller than it is? Oh, wait a minute...he is a dwarf planet, isn't he?