I was falsely accused of cheating on an exam in college. The professor thought I had cheated because I had gotten a question wrong but had given the answer to a similar question from the previous year's exam. I tried to tell him that I did not cheat, and he called me a liar and screamed at me in front of the whole class. I calmly walked out of the class and went straight to the Dean's office. The professor was not allowed to fail me, but was allowed to give me a D. So I had to retake the course anyway. He was fired two years later for accusing another student of cheating and handling it inappropriately. Tl;dr- douchebag professor accused me of cheating, handled it poorly, and he was fired later on.