Who gives a what?

I find it fascinating what students say in front of teachers, or really what people say at the most inappropriate times. As you may know I am taking quite a few "easy A" classes but some of the best stuff comes from my AP classes. In one of my classes in particular there is one part of the room where everybody just talks about how much they can drink and smoke before feeling the effects or the crazy party that they went to. Don't get me wrong, I am not oblivious to what happens at parties, I know not many people are spending their Friday nights with their mother playing monopoly. However, I don't understand why you would flaunt that information (that could very well have them suspended or expelled) around a teacher. One of my friends recently asked them why they talk about it so close to the teacher and they responded with, "oh she can't here us, she's teaching the class." Really? I am going to have to disagree, she is just ignoring you! She isn't deaf, and I would bet that she knows most of the lingo, after all, she is still alive.