How about, "sent to Coventry," "cat amongst the pigeons, "(love that one), "spend a penny" and "going widdershins"' (my father used to say that). Once I was staying at a guest house in Edinburgh, where we ate breakfast family style. We were chatting with a lovely couple, Scots now living in Australia, and their brother or bil. He had a heavy Glaswegian accent, and I just couldn't make out what he was saying. My face must have expressed my puzzlement because when he ended a story with "know what Ah'm sayin? " his bil broke in laughing. "No," he said. "She doesn't understand a word you are saying! And for that matter, neither do I!" We had a good laugh over that. It remains one of my fondest travel memories.