Re: I did poorly, got an A instead of A+ as I bombed the final
ahem… let’s just say that when it comes to some students, I prefer meeting in the cafeteria rather than in my office. Also, I always try to keep the webcam button handy just in case I need to keep a log of the meeting session. I’ve learned over time - the first few years of University teaching were rather “interesting” 
On the other extreme, I’ve also been threatened by students - had to get campus police involved in one instance.
I can go on and on 