A friend once told me, he and his companion went to the toilet in the universe, there all the cabins are closed. The second, not long thinking, pulls one. She opens up and both see the dean sitting. A second’s silence, after which the dean stretches out his hand to close the door. My friend somehow in confusion did not understand the whole situation and thought that he wanted to give up and stretched out his hand. After a handshake, the door was successfully closed.