Did you know that in Iceland people actually believe in elves? And in Korea, so many people believe that if you leave a fan on for too long it will suck the oxygen out of you, that fans are sold with timers so they can shut themselves off after you fall asleep? (I learned these tasty facts from deconversion.org.)
In Lithuania, people believe that it is bad luck to shake hands over a threshold, if a bird craps on your head or you step in shit you’re destined to become filthy rich, and if you whistle indoors you’ll attract “little devils.”
Anyone have any other international superstitions to share–just for fun?