The FCC’s decision raises another mystery about swearing: the bizarre number of different ways in which we swear. There is cathartic swearing, as when we slice our thumb along with the bagel. There are imprecations, as when we offer advice to someone who has cut us off in traffic. There are vulgar terms for everyday things and activities, as when Bess Truman was asked to get the president to say fertilizer instead of manure and she replied, “You have no idea how long it took me to get him to say manure.” There are figures of speech that put obscene words to other uses, such as the barnyard epithet for insincerity, the army acronym snafu, and the gynecological-flagellative term for uxorial dominance. And then there are the adjective-like expletives that salt the speech and split the words of soldiers, teenagers, and Irish rock-stars.