Santa's Request for Mother

Okay, listen up, you simpleton. You see, the joke is funny because the girl is asking for a sister, and Santa is reacting as if he is going to make the sister himself. It's not logical, but it is funny. You probably think that Santa just makes toys. He doesn't make people, you know. But this is a joke, so it doesn't have to make sense. It's like when you try to tell a joke. It's not good, and nobody laughs. You should stick to writing them down.