If you’re dressed to kill, you’re looking sharp. But does the expression have to do with medieval chivalry or military armor of any kind? Nope. The earliest cases pop up in text in the 1800s, based on the trend of adding the words to kill onto verbs...
What do English bowmen, the French, and lopped-off digits have to do with the classic middle-finger insult? Absolutely nothing. A San Diego truck driver wonders about the true origin of the one-finger salute. There’s a great debunking of the English...

