My european wife (watching some US show) just asked me "what is it with Americans and their boxes*?" After determining the context of the question (being escort

My european wife (watching some US show) just asked me "what is it with Americans and their boxes*?" After determining the context of the question (being escorted out of the building with your personal items in a box) I attempted to explain At Will Employment... * last time it was the red plastic cups, before that it was "being proud", etc. etc.