" [David] Wallerstein discovered that people would spring for more popcorn and soda- a lot more- as long as it came in a single gigantic serving. Thus was born the two-quart bucket of popcorn, the sixty-four-ounce Big Gulp, and, in time, the Big Mac and the jumbo fries. "

― Michael Pollan , The Omnivore's Dilemma: A Natural History of Four Meals