“Of course the thing would have to be done furtively and politely,” said Clovis; “the charm of it would be that it would never be perfunctory like the other thing.  Now, for instance, you say to yourself:  ’I must show the Webleys some attention at Christmas, they were kind to dear Bertie at Bournemouth,’ and you send them a calendar, and daily for six days after Christmas the male Webley asks the female Webley if she has remembered to thank you for the calendar you sent them.  Well, transplant that idea to the other and more human side of your nature, and say to yourself:  ’Next Thursday is Nemesis Day; what on earth can I do to those odious people next door who made such an absurd fuss when Ping Yang bit their youngest child?’ Then you’d get up awfully early on the allotted day and climb over into their garden and dig for truffles on their tennis court with a good gardening fork, choosing, of course, that part of the court that was screened from observation by the laurel bushes.  You wouldn’t find any truffles but you would find a great peace, such as no amount of present-giving could ever bestow.”

“I shouldn’t,” said Mrs. Thackenbury, though her air of protest sounded a bit forced; “I should feel rather a worm for doing such a thing.”

“You exaggerate the power of upheaval which a worm would be able to bring into play in the limited time available,” said Clovis; “if you put in a strenuous ten minutes with a really useful fork, the result ought to suggest the operations of an unusually masterful mole or a badger in a hurry.”

“They might guess I had done it,” said Mrs. Thackenbury.

“Of course they would,” said Clovis; “that would be half the satisfaction of the thing, just as you like people at Christmas to know what presents or cards you’ve sent them.  The thing would be much easier to manage, of course, when you were on outwardly friendly terms with the object of your dislike.  That greedy little Agnes Blaik, for instance, who thinks of nothing but her food, it would be quite simple to ask her to a picnic in some wild woodland spot and lose her just before lunch was served; when you found her again every morsel of food could have been eaten up.”

“It would require no ordinary human strategy to lose Agnes Blaik when luncheon was imminent:  in fact, I don’t believe it could be done.”

“Then have all the other guests, people whom you dislike, and lose the luncheon.  It could have been sent by accident in the wrong direction.”

“It would be a ghastly picnic,” said Mrs. Thackenbury.

“For them, but not for you,” said Clovis; “you would have had an early and comforting lunch before you started, and you could improve the occasion by mentioning in detail the items of the missing banquet—­the lobster Newburg and the egg mayonnaise, and the curry that was to have been heated in a chafing-dish.  Agnes Blaik would be delirious long before you got to the list of wines, and in the long interval of waiting, before they had quite abandoned hope of the lunch turning up, you could induce them to play silly games, such as that idiotic one of ’the Lord Mayor’s dinner-party,’ in which every one has to choose the name of a dish and do something futile when it is called out.  In this case they would probably burst into tears when their dish is mentioned.  It would be a heavenly picnic.”