Jeeves and the Unbidden Guest by P. G. Wodehouse

I'm not absolutely certain of my facts, but I rather fancy it's Shakespeare -- or, if not, it's some equally brainy lad -- who says that it's always just when a chappie is feeling particularly top-hole, and more than usually braced with things in general that Fate sneaks up behind him with a bit of lead piping. There's no doubt the man's right. It's absolutely that way with me. Take, for instance, the fairly rummy matter of Lady Malvern and her son Wilmot. A moment before they turned up, I was just thinking how thoroughly all right everything was.

It was one of those topping mornings, and I had just climbed out from under the cold shower, feeling like a two-year-old. As a matter of fact, I was especially bucked just then because the day before I had asserted myself with Jeeves -- absolutely asserted myself, don't you know. You see, the way things had been going on I was rapidly becoming a dashed serf. The man had jolly well oppressed me. I didn't so much mind when he made me give up one of my new suits, because, Jeeves's judgment about suits is sound. But I as near as a toucher rebelled when he wouldn't let me wear a pair of cloth-topped boots which I loved like a couple of brothers. And when he tried to tread on me like a worm in the matter of a hat, I jolly well put my foot down and showed him who was who.