One thing that non-Americans want to know: why do you call toilets "bathrooms"?
one can pee without touching anything.
When I was young I read an (American) sociology text in which there was a section about a public housing project called Pruitt-Igoe in St Louis, Missouri. It included interviews with residents of the project. One lady said she was tired of non-residents getting into the building and "going to the bathroom on the landings". I remember thinking how enlightened the city authorities were to provide bathrooms on the landings.
a bathroom/washroom/restroom is more than just a toilet
(that's the Canadian take on it)