The term "Black Friday" dates back to 1950s Philadelphia. To what did it refer?
Answer Chaos created by tourists arriving for the Army-Navy football game on Saturday
Simply put, football fans used to go a little nuts the night before the big game, which inspired the nickname coined by the exhausted Philadelphia Police Department. Retailers tried to change the name to "Big Friday" and zap the negative connotation, but it didn't stick.
Asked by Beth Sederstrom · Last updated 5 years ago · 6.4K views · SOURCE