National Knock - Knock DayAs seen in our October 2013 Calendar
If you're looking for the answer to the perennial question, "Who's there?", October 31 is your day. October 31 is the unofficial holiday known as National Knock-Knock Day. It's a day to tell knock-knock jokes to your family and friends. Celebrated on the same day as Halloween, it gives another reason for kids to knock on their neighbors' doors. Knock-knock jokes don't have to be funny. In fact, sometimes the louder the groan, the more satisfying the joke.