In fact, it is believed that the Christian story of the Last Supper may find its origin in this particular myth. Apparently twelve deities sat down for a meal at a gods' feast only to have Loki, the god of mischief and disorder, come along and crash the party. He rose the number to thirteen, causing one of the gods to die during the meal. The number was adopted by witches for their covens, which always number thirteen. Still, to this day, the superstition lives on.
Most hotel chains have no room number thirteen and many skyscrapers are without a thirteenth floor.