Attached is a fairly amusing example of what can happen when someone from the States and someone from Britain have a conversation. Of course, this is an obvious wind-up, but sometimes both parties have no idea what the other is talking about, as each have their own special little phrases and terminology that only a select few can actually understand.
So, do you know what a Big Girl's Blouse is? What sort of phrases and terminology do you use that only a few special people can understand?