Keep it clean

This is a picture they have up in the mens' room at my current client.

If you cannot read it, here is what it says: "let's keep it clean, people"

"Please be courteous to your friends and coworkers by keeping this bathroom clean."

I wonder who decided we were such slobs that we needed such a sign. I also wonder if this considered that we the men's room users might get offended by the implication that we are such slobs.

Weird.