There were a few toddlers in attendance when I saw Flooded McDonald’s, the new Black Box video installation at the Hirshhorn, and the kids’ concern at the drowning swirl of McDonaldlandania made me wonder if the experience would scar them for life. Would they be able to chow down on a Happy Meal without thinking of drowning? Would they develop a healthy mistrust of fast food? Might they just switch to Burger King?