Re "I went to ASL, The American School in London in St John's Wood so we went by the US system.":
That explains it! Funnily enough, at the same age I was living in Berlin and although British I was sent to the American school there. That's where I was introduced to Baby Ruth bars; Sun-Maid Raisins; salted popcorn; peanut butter and root beer. Never grew out of those! Re "The Beatles "butcher" album cover.": That was gross!