What does it mean to run and play Doudou every day?

Additional note: This is a joke. A scientist went to Antarctica and encountered a group of penguins. He asked one of them: "What do you do every day?" The penguin said: "Eat, sleep and play beans." When asked about the last penguin, the penguin only answered "Eat and sleep" and then the scientist asked you Why don't you fight Doudou? The penguin said: "I am Doudou"