Sometimes elevators can feel restricting. I remember this one time I was in the elevator with a college professor of mine. He had given us this whole lecture about how if we saw him in a museum we shouldn't talk to him. He taught Art History. It was just the two of us in a elevator, not at a museum but he scared me with that speech. I was a dead panic about whether I should say hello or not make eye contact.
In the end, I decided not to say anything and as we both got off the elevator he wheeled on me and said "Hello! You're in my class you can say hello can't you?"
And then I squeaked a hello and ran down the hallway. But I remember that elevator ride and how confined I felt in that little box.