Other fun US/UK cultural issues: interview questions like "how many pingpong balls fit in a school bus". To Brits a school bus could be literally anything from a coach to a small vehicle, they aren't standardized like in the US. Even when you remember the big yellow buses from films, how big are they? If you never saw one in real life it's hard to imagine. Also it took a while before I figured out that "ping pong" meant table tennis. Fun times.