The Simpsons is a much-loved show, and over the years there have been subtle changes to modernise it and make it more reflective of the world we live in today.
And now, the Simpsons writer has challenged fans to spot a big change to Moe's Tavern after 33 years - but can you spot it?
The fan favourite animated show dropped a new episode on Sunday night, and it saw a character who appeared in series one appear for the first time since - and people were elated to see him again.