When I was in grad school, there was a kindergarden teacher with my same first and last name in our small town. This is unusual - my first name is common, but my last name is fairly rare. So, I'd pretty routinely get calls about various kids. The amount of information about their small children that people would happily leave on an unknown answering machine was mind-boggling. I heard ALL ABOUT toilet training problems, lice, roundworms, and various tendencies to bite (but it's not a problem, really!), but the worst was a woman who called while I was there, and WOULD NOT believe that I wasn't really the teacher, and just lying about it. She ended up shouting at me that there couldn't possibly be two people in this small town with the same name! I was a lying yadda-yadda (even with the more relaxed rules on swearing here, I'm not comfortable repeating what she called me). It finally ended when she yelled, "I don't care what you lying [expletive] say, my kid DON'T SWEAR!"
I couldn't help it. I started laughing, and she hung up. She left me several more abusive phone messages before her child finally graduated from kindergarden and I fortunately had no further contact with her.