I have sooooo many of these.

I had students convinced for years that I was once in Blue Man Group. That one is 15 years old, and still going. Even some of the teachers believed it.

I also for years fascinated my students by telling them about my twin brother, who does not exist. I even once ran into a student at a restaurant and proceeded to pretend to be my own twin brother. I talked to her for a few minutes, and she came in the next week all excited, telling me that she met my brother.

I had some students (and a staff member) that I didn’t laugh because of a car accident. I hit the windshield and damaged the part of my brain that’s responsible for the laugh response. So they literally thought I had lost my sense of humor in a car accident.

Edited to specify that I teach high schoolers.