Eddie...I refuse to back down in the American/British English wars !
They are toilets and on the odd occasions I use a McD, its chips that I eat, not ruddy "fries" !
I was asked in a country Pub in the Cotswolds of all places, last month, if I wanted potato "chips" with my cheese sandwich.
When I told the rather dim girl serving that no, but a bag of salt and vinegar crisps might be nice, she looked a bit taken back.
Mind you, that day, we were outnumbered by our friends from the former colonies by about 3 to 1 !