There was a time when a new student came to school. He was looking for his classroom and accidentally walked into the teachers' lounge instead. He was so confused when he saw all the teachers sitting there having coffee. The teachers were also quite surprised. But they all had a good laugh about it later.
I remember a story from a friend's school. During a school play rehearsal, the lead actor's costume got caught on a prop and as he walked forward, half of the set came crashing down with him. It was chaos but also really funny. They had to start the rehearsal all over again. This incident became a legend in their school. Everyone still talks about it years later.