Popular culture is like the stuff that everyone likes to do or talk about, like games, movies, music, and social media. It's what's popular and widely known in the world around us.
Think of it like everyone in your class talking about a game or toy that they all love to play with. It becomes a part of their popular culture.
People create popular culture by making things that they think other people will enjoy. For example, musicians make songs that they hope a lot of people will listen to and enjoy. And movie studios make movies that they hope will be popular and make a lot of money.
Popular culture can also change over time. What was popular when your parents were growing up might not be popular now. And what's popular now might not be popular in the future.
But no matter what's popular at the moment, it's all a part of our shared experiences as a society.