Suppose you’d invited me round to dinner to celebrate my engagement to your daughter, which do you think would be more offensive? If a) I got violently drunk, threatened all the male guests, abused the women doing the catering, shoved my tongue in my hostess’s ear, hurled a bottle through the window, felt up all the bridesmaids under the table, then retreated to the jacuzzi to shag your daughter’s best friend? Or b) if I made a mildly tasteless quip about the Holocaust?

There’s only one correct answer and it is, of course, b).