Here’s a good one I ran across yesterday:  The local Shell station near work has a nice sign glued to their pumps advising motorists not to drive off with the pump hose still attached to the gas tank.  To underscore how serious they are about this, they wrote “violators will be liable to pay the cause of damages”.   Yea, I had to read it twice too.  Wow!  Somebody wrote that, then somebody else approved it, then it went out to the printer… by the time it arrived at the station for the owner to affix to the pumps, dozens of people had seen it.  Yet nobody said “um, what?”