I love being told how stupid I am, but my favorite has to be when a student informs me their mom is a lawyer and she is going to sue me - though the student can't really give me a reason other than I'm being horrible to them (aka making them follow the rules).
That's just awesome!
I didn't laugh in the student's face.... much. I did, however, inform that student that I didn't have ANYTHING worth suing over... I don't own anything other than some dvds, a tv, and my clothes. I'm a second year, single, teacher. So good luck with that!