Interestingly, we got our first book about the planets that does not include Pluto as a planet. Jack is a little confused because all the other books are older and predate the demotion of Pluto. I found a book at the library written by the guy who demoted Pluto and apparently discovered another planet that I'm planning to read...and then I'll be able to better explain that to Jack.
On another topic...Jack noticed that the new toilet paper in the bathroom had hearts on it. He said, "Mommy, I don't think you need to buy toilet paper for Valentine's Day and other holidays because you're just going to use it to wipe my bum."