(Cultural) Warning Sign

From the towel dispenser in the men's room of the restaurant I ate at last night:

Pull towel gently with both hands. Do not attempt to hang from towel. Willfully disregarding these instructions may be harmful or lethal.

To which many things can be said, but I think Boris had the best response when he asked, "Does that mean that the towel somehow knows if you're doing it on purpose or not? Oh, he's doing it accidentally, so I guess it must be okay."