Okay kiddo, so you know how there is a really famous movie series called Star Wars? Well, people all around the world love this series and every year on May 4th they celebrate something called Star Wars Day.
You see, May 4th sounds a lot like a famous line from Star Wars. In the movies, the robots say "May the force be with you" a lot. So, people started saying "May the fourth be with you" instead on May 4th because it's a silly joke.
On this day, people dress up like the characters in Star Wars, play games, read books, watch movies and do all sorts of fun things together to celebrate the love that they have for the series. Some people even make special treats that are shaped like characters, spaceships, or things they see in the movies.
Overall, Star Wars Day is just a special day where people come together to have fun and enjoy things related to the Star Wars movies. May the fourth be with you!