It happened in a very hot summer in Taipei where I was on my holiday there. I went by a bank. Through its big window, I saw a label on the coffee table in its entry hall, on which it said both in Chinese and English, "No Sleeping Here". Apparently there used to be some people sleeping there, of course not on the table but on the sofa which was for its customers waiting for the service. I thought those sleepers were really clever because it was too hot outside on the street, and there were air-conditioners on inside. So why not have a snap there? But obviously the bank didn't want this, so they put a sign on the table to warn those potential sleepers. I felt it was interesting, so took a picture from the outside of the window.
This sketch was based on that photo.