I got on the bus yesterday and happened to glance up at the ceiling (I don't mean along the sides of the ceiling either, it was on the ceiling, running down the center). There was an advertisement for I forget what. I probably don't remember, because I was so shocked that someone would paste an advertisement on the ceiling of a bus. Besides putting in eye drops, why would someone be lying down looking at the ceiling of a bus? That's more than a little bit disturbing.
I'd have taken a picture with the phone on my camera, but those pictures always turn out crummy unless you've got a really good model.