I had forgotten about the joke. They kept asking me if I knew any ‘four-letter words’ and, while I had not run across that term before, I had an enormous vocabulary, and it was the kind of thing that teachers asked eight-year-olds, so I ran through every word made of four letters I could think of, until they told me to shut up, and asked me about rude jokes and where I had heard them, and to whom exactly I had repeated them.