Back in my junior year of high school, my US Government teacher had a complete meltdown because he apparently thought two male students were laughing at him. He threw his chair across the room and into the wall. He proceeded to scream about how he got a "34 on his ACT" and should be a distinguished professor but instead is a high school teacher and hates how immature we all are. He was screaming and calling "all of us" - "motherfuckers", "fucking pricks", and "pieces of shit". After a few minutes he stormed out. Another teacher came in a few minutes later and we had substitute teachers the rest of the week.

The next week, he returned and refused to apologize. He gave us all assigned seats and said any talking or laughing would result in a failure of his class. Thank goodness the school year ended 2 weeks later, it was so awkward. Apparently the male students were laughing at something that had nothing to do with him and life stressors played a part in this meltdown. I heard years later that he had a full on psychotic break and wound up on a psychiatric unit. Sad stuff, he was a solid teacher. Stress people, don't let it get you.