True, but on the other hand they always give themselves away so it's very easy to spot and adjust expectations.

I found this article and discussion valuable anyway.

I would also encourage you to stop using "Americans" as synonymous to "US:er", there are many countries, cultures and peoples in the American continents that are not from the USA and quite a few that geographically exist within it too.

By pointing out that they are US:ers we can help each other to remind ourselves and them that they are not in fact the only version of human that exist.