Even my crohn's doesn't cause this!

Shelby is getting to the age where she'll start appearing here more often I think. Two nights ago before going to bed she had to go to the potty. She said "My bottom hurts". I said "It does". She started nodding her head and stood up so I could see. I carefully looked not knowing if she had a raw bottom or not. After looking I said, "Honey I don't see anything". She said "It's Blue and Shiny". Who knows where she got that saying, I know I've never heard it.