One of the most iconic and the longest-running sitcoms in the US, The Simpsons, has been on the air for more than three decades. Over the years, it has gained millions of fans from all over the world, who simply can't get enough of the creators' witty take on American culture and politics. The show which centers around a family living in a typical American town has had a major influence on pop culture and even predicted actual events. One of the reasons why the Simpsons won the heart of so many viewers if how well the show is thought out. The writers haven't missed a single moment to demonstrate their sense of humor, even in situations where viewers don't always notice. However, if you are vigilant enough you probably noticed all of the hilarious signs placed all over the fiction Springfield. In case you didn't, scroll below for the list we have dedicated to all of the amusing signs in the show's episodes which could have been easily missed.