Want to get a pay rise, an extra helping of pudding, or a discharge from the army?
Well, you're not likely to be able to get one through official channels, are you, and of course you don't want to be dishonest. I mean, you wouldn't dream of doing anything criminal or selfish, would you, and you're definitely not a cheat.
As for doing someone down, well, it's just not in your nature.
And so you wangle it.
Wangle...such a silly, undignified sort of a word. There couldn't possibly be any harm in it. No, wangling something is just a bit of mischief, a chance to display your charm, cleverness, man-of-the-world knowledge of human nature, and powers of persuasion.
Well, isn't it?
Thing Probably Not To Do Today: wangle something. This word was originally 1800s printers' slang, and even now wangle sometimes implies some entirely innocent piece of cleverness. One might wangle it so you can make a dress from a slightly smaller than recommended piece of fabric, for instance. The origin of the word isn't clear, but it may be a blend of waggle and wankle, a word which has mysteriously gone out of fashion but which means wavering. It comes from the Old English wancol.