Here is this:
>...If the teacher is very late and someone in the audience grumbles hopefully "And maybe, >he will not come?" - he will come in foot, in about a minute. If all will silence - > there will be no pair. There are no exceptions yet)
It reminded history.

A couple approaches the most unpleasant, mad and unbalanced teaching by the name "Silver". Two groups, a couple in one. Prep is delayed. I don’t remember who got the idea, and more so – why... The “strom” was put out, and the remaining students quickly pushed the middle rows to the walls, and those who didn’t fit into the staff at the back wall. There was only a chair of the teacher right in the middle of an empty space the size of a small sports venue.
The result exceeded all expectations. Silver came, put his suitcase on the chair, opened his mouth and kept silent for a few minutes. We were silent too. After that, he burst into something like "so you can’t work" and moved away toward the dean. We waited for a break, but neither that day nor the next, a break did not happen. As the secretary later told - to the dean of Silver came, but to issue claims more specific than "so you can not work" and "all of them wicked" could not, and went out, in anger knocking the door. That, in turn, did not add him respect in the eyes of the Dean and simplified the life of students who have problems with this teaching.