Dirty House?

Grandma Debbie swept her floor today and showed our little scientist, Kyler, her dust pan full of dirt. She said, "Boy, my house is dirty!" Kyler acted like it was okay and it wasn't her fault. He said, "Grandma, that's because of gravity." I have no idea how where he came up with this but I like it. It's going to be my new excuse for everything.