So my mom is Norwegian. My brother and I were raised in the US speaking Norwegian and English in the home.
One summer our family were visiting relatives in Norway and were browsing a little shop (I love a little shop!) in a very small village. We happened to be speaking English with one another at the time. My mom noticed (and got great pleasure from) hearing the two shopkeepers FREAKING out about having to speak English to us. They were late teens, early twenties and were likely very proficient in English, but nervous about having to use it on some American tourists.
Short-straw shopkeeper approaches us, very red faced: Good afternoon. May I please help you find anything in our store?
My mom (in Norwegian): We're quite all right, thank you.
Her: OH THANK GOD. (and other flustered mutterings).
Her: OH THANK GOD. (and other flustered mutterings).
It was very cute.