When I was eight my Dad was taking me to see a movie. On the way there I asked him if he would buy me some gum. He said, "No, you don't need any."
After arriving at the theater and taking ours seats, Dad changed his mind. He told me it would be okay for me to have some gum and he was going to get it.
I spoke up and said, "You don't need to buy me gum anymore, Daddy. I found some under the seat."