The narrator tells us that he's not worried about his brother. He's just worried about how big he is. He tells us to go home and wait for him. He promises to take care of his brother, even though he is a crybaby. The narrator then tells us what they're supposed to do next. They're going to go to the park, but they need to get some clothes on before they go, because he'll get sick from being cooped up all day.
The narrator tells us that he's not worried about his brother. He's just worried about how big he is. He tells us to go home and wait for him. He promises to take care of his brother, even though he is a crybaby. The narrator then tells us what they're supposed to do next. They're going to go to the park, but they need to get some clothes on before they go, because he'll get sick from being cooped up all day.