A day in which schools close because of the fear of being sued by ridiculous parents in the event a bus skids on the ice. Most likely to happen in Eastern Pennsylvania when the first flake of snow falls. Immediately, the schools will call in to the TV Stations to announce their closings. Each school is dependent on one another, for once a school delays or closes, all other schools decide to close as well. A school is also forced to close because otherwise students would be exhausted the next morning because they would be up all night watching the chain reaction of schools canceling, only to find out theirs did not.
"Yes! We got a trace of snow and have a snow day! Haha! My cousin's school is out of the chain reaction of schools and he does not have a snow day. I shall call him during his 3rd period class to tease him."