New York City food truck 666 Burger unveiled a devilish new menu item last week, a $666 burger that is either ridiculously blithe or a genius marketing ploy. Either way, their concoction is, by many accounts, the world’s most expensive food truck hamburger. Think Kobe beef, covered in gold leaf, topped with everything from foie gras to lobster, and all wrapped up in three hundred-dollar bills. The “Douche Burger” is so pricey your wallet may spontaneously fold in on itself in protest. Your stomach might, too.