Myths tested: Can a scuba diver wear a tuxedo underneath his drysuit, go underwater, resurface, strip off his scuba gear, and be able to present the tuxedo perfectly? Can a car's tire pressure affect its fuel efficiency? Can a laptop stop a bullet from point-blank range? Can a hair weave stop a .40 caliber bullet? Can a fridge door stop a round of 9mm bullets? Out of using your elbow, using your hand, and using a handkerchief to cover your mouth when you sneeze, which is the best way to limit the spread of germs? Is it easy to take candy from a baby? Can a bottle of beer, when given a sudden shock, turn from a liquid and freeze into a solid?