Interacting with foreigners of any kind is an interesting cultural, character-study: 50-something-year-old German women with that unique purple-red hair color; Chinese businessmen surreptitiously smoking on planes; binge-drinking Brits.
All simply splashes of unique “local color.”
But upon encountering a fellow-American, the cross-cultural interest falls away and I more swiftly evaluate, label and judge. Better-understanding the “markers” of Americans — conservative/liberal, East Coast/West Coast, hyper-religious/non-religious, SUV-driver/bike-rider, Pepsi/Coke — facilitates swifter categorization between the like-minded potential buddy or to-be-avoided weirdo.
Conversely, I can suffer a mildly neurotic foreigner for a much longer time before deciding one way or another.
Is it just me?