O.K. I thought of another weird U.K.ism. When you use the underground (or tube as they call it there), sometimes there is a space between the car and the platform. That space is called the 'gap' and there used to be signs everywhere saying 'Mind the Gap'. They had T-shirts for tourists too. I wish I had bought one at the time. There are much fewer 'Mind the Gap' signs now. I wonder if they fixed the gaps now? Curious. . .