Ah, wonderfully divided by a common language!!!! :)
"Fanny" is a great cause of transatlantic fun too. And if you are a Brit in the US, never ever say, "Im diving out for a fag". You're gonna get some odd looks.
Fascinating fact: the phrase "knock up," as in awaken by knocking, comes from the industrial revolution, after people were having to rise at a certain hour for the first time in history, but before the invention of the alarm clock. The "knocker-upper" was a person who went round with a long wooden pole, knocking on the windows to get people out of bed for their factory shifts.
"Fanny" is a great cause of transatlantic fun too. And if you are a Brit in the US, never ever say, "Im diving out for a fag". You're gonna get some odd looks.