National Joe Day is a chance to change your name, if only for today.
Many people do not like their given name. They wish they could change it. A few actually do. On National Joe Day, it is perfectly okay to have everyone call your "Joe". Why Joe, and not Bob or Mike or Radcliffe? Simply, because everyone likes the name Joe. If you are called Joe today, we know that you're "Joe cool"!
This works well for the men out there. What about the ladies? We suggest you choose Josephine or Jody.