Whilst looking up Cockney Rhyming Slang, I found another webite with US/Uk English and Vice Versa

http://www.scit.wlv.ac.uk/~jphb/american.html

I'm still discovering new things.

I had always thought that the film "Airplane" was a joke spelling - I didn't realise it was real.

I hadn't realised that Whisky was spelt like Irish Whiskey, exclusively.

I was always hugely irritated by the (rather meaningless phrase) "Happy Holidays". I didn't realise that Americans don't take holidays except when they are Bank Holidays.

I didn't know what a shoestring was, which is strange as we are quite happy about doing things on a shoestring.