Dinner, tea, supper, and British social class. →
In Canada and the US, “dinner” and “supper” might be used slightly differently by some people but are generally considered synonyms. However in Britain, the name you give your meal is a shibboleth that can instantly identify your social origin.
I have overshot myself, I have spoken foolishly, rashly, unadvisedly, absurdly,...– Robert Burton, The Anatomy of Melancholy (via invisiblestories)