Sally Davies, a New York-based photographer -- and decades-long vegetarian -- took a McDonald's Happy Meal home six months ago to see if what she had read online about a school teacher with a 12-year-old McDonald's burger could possibly be true (spoiler alert: it is). Davies' friend claimed the food would mold or rot within 2-3 days and that the story of the 12-year-old burger was nothing more than a tall tale.