What was the best instance of “I told you so” that you ever witnessed?

I remember when my best friend in high school decided to skip class one day to go hang out with some friends instead. I warned her that if she got caught, she could get detention or even suspended. She brushed it off and went anyway. Sure enough, she got caught and ended up getting detention for a week. When she came back to school, she came up to me and said, “I told you so.” It was a bit of a triumphant moment for me because I had tried to warn her, but she didn’t listen. It was a lesson for both of us about the importance of following rules and taking responsibility for our actions.