Well, in our freshman year PE class, we had to do a relay race. One of my classmates was so eager to start running that he took off before the baton was actually passed to him. It was really chaotic but also hilarious. After that, we always joked about his over - enthusiasm during races.
In freshman year, during a school assembly, the principal was making an important speech. But there was a really loud bird outside that kept chirping. Every time the principal paused, the bird would chirp even louder. Some of the students started imitating the bird and it turned into a really funny situation. The principal just had to laugh along with us in the end.