..Like the English.
Most Brits use slang and colloquialisms as part of their everyday life. Even JW's use the less offensive terms.
I was surprised that many Americans hadn't heard of the term "loo" before. Even JW's call it that, although I doubt if they'd refer to the loo as the "bog". That would be far too offensive for their delicate ears.
Anyway, just to make life easier on this multi-cultural (hah!) board, I've found an ideal website that translates English slang into what most people can understand more easily. Here it is:
A very good site for understanding Brit slang.
Enjoy!
Englishman.