In college, I went to a party at my friend's place, an American's apartment. The roommate was oriental. Most people took off their shoes. I didn't since my doctor told me not to go bare-footed outside my own house. I didn't want to have my feet injured.

Someone accosted me about not taking off my shoes I said it's an American custom to wear your shoes in the house. They said it was an oriental house, but since my friend was American I said it was an American house.