One time in high school chemistry class, we were doing an experiment where we were supposed to burn a tiny amount of casein over a bunsen burner.
A friend of mine in class who was never paying attention showed me a huge scoop of casein and asked me if that looked like the right amount. I told him yes just because I thought it would be funny to see him do it.
It filled the whole classroom with smoke, and the teacher sent us to lunch early. The smoke got out in the hallway and the commons. It smelled like burnt hair. Everyone was mad at him and it was funny.
