Walking under a ladder in Thailand should not bring you bad luck unless you get hit by a falling mirror, in which case, depending on the size of the mirror and the severity of your injury you’re probably looking at between 7 seconds to 7 years bad luck. Likewise, black cats crossing your path, opening an umbrella indoors or Friday the 13th should be no cause for alarm in Thailand. But woe betides anyone who gets their haircut on a Wednesday!