The Washington Post:  “First things first: Quadruple-check your ticket after Tuesday’s Mega Millions drawing. Then do it again. Do they match the winning numbers (5-28-62-65-70, with a Mega Ball number of 5)? No? Skip to here. Yes? Lock the deadbolt and read on. Congratulations! So, you’ve done it. Beaten the odds — one in 302,575,350 — and won the largest Mega Millions jackpot in history. And it’s yours alone, so you’re almost certainly about to enjoy an astronomical spike in wealth. Now what? Before you shout from the rooftops or broadcast your excitement on social media, take a deep breath and keep some practical advice in mind. To sign or not to sign the back of the lottery ticket? There are plenty of people who will advise you to sign the back of the lottery ticket right away — including lottery officials in South Carolina, where Tuesday’s winning ticket was sold. After all, what would happen if, heaven forbid, you lost the ticket? Or worse yet, if an unscrupulous person in your life took the unsigned ticket and claimed it as his or hers?”