Rude Banner

This could only be funny to someone who has studied Chinese. It is slang for a very naughty word, even though the point of the banner was originally to attempt to encourage all of the residents not to throw their garbage around.

What is a Televangelist?

Please click on this picture to see the full size version.
One of my test questions was 'what's a televangelist?' The student gave a very satisfactory answer. I at first marked it wrong, but then decided to give full credit as it was certainly true, if not precisely the answer I was looking for. Some of the other answers are worth noting as well.