Everyone wears the color green to honor Ireland. If someone doesn't where green, everyone else is allowed to pinch him. Some people say that if you pinch someone who is wearing green, that person gets to pinch you back ten times. Decorations often include shamrocks to honor St. Patrick. He is supposed to have used the shamrock to explain religion to the Irish people.
Leprechauns are also common decorations.
It is said that these little magical men hide their gold in pots at the end of the rainbow. There are always big parades in Chicago and New York. When a person finds a four-leafed clover, he or she will have good luck. When I was in first or second grade, being able to pinch someone in school without getting in trouble was very important. It was our one chance all year to do something like that.