Southern California burger chain Slater's 50/50 (probably) isn't rooting for the end of the world this Dec. 21, but the restaurant still wants to unleash an epic disaster on your heart and arteries with their new "Armageddon Burger.""In honor of the Mayan day of doom," as Zagat puts it, the burger is a 1/3-pound meatloaf slice made with 50 percent beef and a 50 percent blend of bacon and pancetta.