I am continually amazed at and amused by the unfailing politeness of my British colleagues. Where one of the American researchers might say "that book is a piece of crap," the Britons will instead say, "that book is the most useless work of reference it is possible to construct." American: "You screwed up my meeting by attending that worthless webinar. Did you learn anything useful?" British: "You spent the afternoon inconveniencing my meeting while attending that rather questionable webinar. Since you are now an expert, can you suggest what language I should use to describe this concept in my invention disclosure?" They are masters of the ruthlessly cutting insult delivered in the mildest and most benign manner, which my snarky sense of humor just adores.