I forgot one thing. There is a joke about penguins. A reporter visited them and said something about hitting them in the balls. What's that joke about?

A reporter saw penguins when he went to the South Pole, so he went to interview them. Reporter: What do you do every day? Penguin 1: Eat, sleep and play ball? . The reporter went to find the second penguin. Reporter: What do you do every day? Penguin 2: Eat, sleep and fight? Eggs. The reporter went to find the third penguin. Reporter: What do you do every day? Penguin 3: Eat, sleep and beat the balls. The reporter asked again and again, "Eat, sleep and hit the balls", and finally the last penguin came. Reporter: What do you do every day? Penguin n: Eat and sleep. Reporter: Then why don't you hit your balls? Penguin n: Because my name is Eggs.