National Fart Day on February 5 is a comical holiday celebrated for humorous purposes. There are many similar holidays in the U.S., one on January 7 specifically known as National Pass Gas Day, and others on February 5, March 5, and July 31, including Fart Out Loud Day. Farting is generally considered inappropriate and a violation of the concept of etiquette, but did you know that farting has led to full-on fights and battles in history? For centuries, before etiquette was established, farting was considered normal. Cultures differ across countries, and every nation has its set of norms and traditions, but somehow, a globalized system of etiquette was created with which everyone is familiar. Farting, or the proper term ‘flatulence,’ is one such example.