p>We're back to debunk a second collection of urban lore and cultural mythology in Fact or Fiction 2: 50 (More) Cultural Myths Explained. In this sequel to our best-selling first edition, we cast our analytical eye on long-standing claims such as the "5-second rule," which insists that food dropped on the floor is safe to eat if picked up within 5 seconds, and that a "base tan" will protect against sunburn.