Begin by creating a comfortable and relaxed environment. Sit in a circle if possible. Decide on the order in which people will tell their stories, either randomly or in a clockwise/counter - clockwise fashion. Then, the first person kicks off the game by sharing a story that is so absurd it makes everyone laugh, like a fish that walks on land and goes to school.
Well, first, gather a group of people. Then, one person can start by telling a really out - there story, like a cat that can fly and talks in French. After that, the next person has to build on that story or start their own equally ridiculous one.
To start a game about telling ridiculous stories, you could set some simple rules. For example, each story has to include at least one impossible element. Then, just pick someone to go first. They can begin with a wild idea, say a tree that grows ice cream instead of leaves. And then others follow suit.