Ok, imagine you are at a big party where everything is different and everyone is having fun in a crazy way. This is what it was like in a special time in history called the "années folles", which means "crazy years" in French.
During this time, a lot of things changed in France and Europe after a big war. People were tired of being sad and wanted to have fun and be happy. They started dancing, listening to new music, and wearing different clothes. They were free to express themselves and be creative without rules or worries.
Some people called this the "Jazz Age" because jazz music was very popular and fun to dance to. People went to clubs and danced all night long. They also discovered new styles of art, fashion and literature that were very different from what they used to like.
In a way, it was like a big celebration of life and freedom. But like any big party, there were some people who didn't like it and thought it was too wild or dangerous. Some even wanted to stop it because they thought it was a bad influence.
But for many people, it was a time when they could be themselves and enjoy life in a new and exciting way. It was a time of change and experimentation that helped shape the world we live in today. So, in a way, we are still partying like it's the "années folles"!