Just before a final exam yesterday, there were two groups of students.
Group A: Loud, talking students standing out in the hall.
Group B: Quiet and studying students in the classroom, reviewing notes or just meditating before the exam.
We had at least 10 group B students in the room, and all the sudden 4 of the group A students walk in, talking very loudly. I asked if we could possibly keep the conversations on a low level, as some of us were trying to get ready for the exam. I received a glare, but the loudest student replied in the affirmative and talked quietly after that. I guess it is easy to walk into a room and not realize that there is zero noise in it, while talking very loudly and excitedly, but still rather SS to me.