When we were deep into potty training, we would read a book called "Potty Experts" every day. Lyla loved it so much, and had it memorized. One of the lines she liked was "Don't worry, you won't fall in."
Last night I took her to a public restroom. I told her to sit still, when I was getting her some toilet paper. She fell into the toilet! I expected screaming and crying. I pulled her out of the toilet and she said: "Don't worry I won't fall in. I did fall in!" Turns out the potty experts is wrong.