"Marketers know that there is an infinite appetite for these kinds of products, so they're going to just keep piling it on until finally, consumers say, 'OK! You went too far. I really want a salad!'" said Drew Neisser, a marketing expert from the advertising firm Renegade.
But American consumers have yet to make that call, and demand for monster burgers is so strong that some are even devising their own super-sized burgers.
A McDonald's burger has gained a cult following on the Internet, even though it isn't even on the menu. It's a concoction of McDonald's dollar menu products, consisting of a double cheeseburger with a spicy chicken sandwich in the middle, and it's got a profane nickname that can't be printed here.
Many have posted videos of themselves ordering and eating the sandwich on YouTube, making it an 800-calorie viral and culinary sensation.