As the name implies, I'm not from around here. I get most of these puzzles in fairly
short order, sometimes with aids, but I really don't understand this one. Thanks for the answer, but I must know why if you would be so kind as to explain.
Not sure about the working out, but "Stop me and buy one" used to be a slogan used by ice-cream salesmen on their bicycles (I kid you not - they had some sort of insulated box on the fron).
Thanks. We had them in Toronto back in the 50s and even later. Replaced by trucks
selling soft ice cream and by Good Humour vendors in trucks.
OK, so now, why 20 pound notes? Expensive ice cream.