"Put down that wrench!"

Yes, I agree with you entirely about the lack of respect for authority. My right ear literally does not work, which you can't tell by looking at me. But it means hearing a lecture is more demanding for me, especially if the acoustics in the room are not good and the lecturer is not vocally trained to deliver a lecture. But I ended up having to sit with people who were talking amongst themselves, rustling bags, getting up to go in and out of the room. I just could not believe that they could do that ! It must be even harder to deal with when you are the lecturer !