If you needed a sign that McDonald's is getting desperate to figure out new ways to get people excited about their food again, this is it: They're actually messing with the Big Mac. They NEVER mess with the Big Mac.

McDonald's

McDonald's just announced they're about to start selling two new versions of the Big Mac: The Mac Jr., which is just a single patty and no extra bun in the middle and the Grand Mac, with two bigger patties and an extra slice of cheese.

Both of them are going to go on sale nationwide early next year, and they're only going to be available for a limited time.

Read more at Business Insider.