Back home we do actually use a "toilet" label for bathrooms with only toilets. Needless to say, my first visit to America made quite a few laughs when I asked where the toilets are so I can wash me hands.
I like how we sometimes call them "restrooms." I don't know what y'all are doing in there, but I certainly ain't resting. I'm usually fighting for my life if I actually am using a public toilet instead of waiting to get home.
In US introductory psychology courses, one common assignment is to deliberately violate some unwritten social norm. Something that is never stated anywhere, but we all just customarily follow. My favorite example is, while visiting a friend's house, ask if you can use their bathroom. When they say yes, go to their bathroom and take a bath.
Reminds me of a comedian who said he likes the European way and started asking "where is the toilet?" in the US. People stared at him saying "In the bathroom".