The superstitious traditions are similar to dances and rituals performed to control the weather by Native American, Chinese, Slavic and Romanian descendants. According to The Buffalo News, the first reference to kids attempting to invoke a snow day by wearing their pajamas inside out was in 1994, in the New Jersey paper The Asbury Park Press. But did you know that the act of turning your apparel inside out for good luck has been around since the '30s? And placing a spoon under your pillow is supposed to help you dig your way out of the blizzard you've conjured once you wake up the next morning, which screams preparedness if you ask me. As for ice cubes down the toilet, The Associated Press printed an article in 2006 about two sisters in Virginia who flushed ice cubes down the toilet to pray for powder. One little girl claimed that if enough kids flushed enough ice cubes, they would go into the ocean, thus making the water cold and snow fall.
There ya have it, folks. Might as well have some ice cream for dinner to seal the deal, too.