Traditionally, pranks are to be performed before noon. Those done afterwards are supposed to bring bad luck to the perpetrator. This stipulation may have been contrived by annoyed parents and school teachers wanting a respite from a full day of pranks. Anyone who fails to respond with a sense of humor to the tricks played on them is also said to be liable to suffer bad luck. It is said that one fooled by a pretty girl will later marry, or at least become friends, with her.
It is believed that marriage on April Fools' Day is inadvisable for a man, for he will be permanently ruled by his wife. Children born on this day will experience good luck in most matters, except when it comes to gambling.