After making this threat, Mr. Newton would stalk off back to his cards, and there would be silence for maybe a minute, and then there would be this tiny whisper from Eugene’s direction, so faint that only a trained ear could discern it:

“Ding,” said the whisper, “DONG.”

And of course this resulted in a situation where, never mind having to clean the latrine, never mind that Mr. Newton was now standing in the middle of the cabin clutching a weighty flashlight and threatening to break everybody’s heads, the only thing any of us could think about was whether we would ever be able to draw breath again.

And so we had a terrific summer, and all because of one idiot joke, which, although I would not tell it in public except under the influence of sodium pentothal, still does a better job of cheering me up than any major religion. I’d like to meet the person who made that joke up, but of course that’s always one of the big mysteries about jokes: Nobody knows who makes them up. They’re just there, floating around and lowering the productivity of offices and factories everywhere. And they’ve been there throughout human history. Archaeologists found this joke in an Egyptian tomb:

HE: Did you hear about the Sumerian? SHE: No. What about the Sumerian? HE: He was extremely stupid. Ha ha! SHE: No, I had not heard about him.

This, of course, is a primitive version of the modern ethnic joke, which still carries the same basic message, although it has become much more sophisticated over the years thanks to the introduction of such innovations as the light bulb. But who introduced them?

Other mysteries about jokes are: How come you can remember extremely complex jokes involving a minister, a priest, and a rabbi, but you can’t remember your mother’s birthday? How do jokes travel so fast, and so far? (The Apollo 7 astronauts found traces of a joke on the moon!) Also: Does Queen Elizabeth ever hear any jokes? Who tells them to her? What about the pope?