After visiting Norway, I noticed that attitudes towards nudity were rather different there; It wasn't seen as nearly as big a deal as in the United States, insofar as I could tell. (Interestingly, my fiance's family seemed aware of this, and altered their behaviors in order to accommodate this. Between the language barrier (My horrid Norwegian versus their rather good English, with a few important holes), and the general nervousness one often feels around one's future in-laws, I was rather too nervous to correct them.)
That being said, someone did scream when they walked in on me whilst I was using the bathroom. As it turns out, door locks in Norway are rather finicky.