Chinchilla Day (also known as Chinchili Day) has quickly become my favorite fake holiday, since Festivus (featured on Seinfeld) has more or less become a somewhat legitimate holiday through increased practice. In the commercial, Chinchilla Day was created by a man as an excuse to stay an extra day in Las Vegas, for which his excuse succeeded, and we can only assume much fun was had. The chinchillas rebelled against a local town and for three days they battled, on the third and final day the outlaw chinchillas were defeated. Every year the incident is celebrated by spending three days in Vegas – fun times.