When I was in school, the chem teacher was carefully pouring nitric acid into a graduated cylinder in front of the class. Just as the first drop was about to hit the bottom of the cylinder, I shouted “BOOM!”, causing him to jerk back on the jug and he burned a couple holes in his tie. Has anyone ever done that to you and if so, what did you do to him?
It’s never happened, and I would call his house and send him up for in school suspension.