If only everybody washed their hands after using the restroom. This is a pet peeve of mine. Walking out of the restroom without washing one's hands shows either #1, ignorance, or #2, plain stupidity.

I work in a building that I'm estimating has 500 people in it, at least. I have no idea how many times I've seen guys leave the restroom without washing their hands. The simplest thing I started doing was grabbing a clean paper towel and using that to open the door out of the restroom.