Guest appearance

Imagine you're at a party and you invited some of your friends over to hang out. Then, out of nowhere, one of your friend's friends who you've never met before shows up at the party. That person is a "guest appearance."

In the same way, on TV shows or in movies, sometimes a famous or important person is invited to make a quick appearance on the show or in the movie. They aren't a regular character, but they show up for a short time to add some excitement or interest. That's also called a "guest appearance."

It's like having a special surprise visit from someone important or exciting at your own party. But instead of your living room, it's on a TV show or in a movie!