why was scout dressed up like a pork?

It is nearly Halloween, and Mrs. Grace Merriweather writes a pageant for Maycomb people to perform about the history of the county. She wants children to play the parts of Maycomb's agricultural products, and Scout is assigned to play the part of the pork. She will wear a large costume made of chicken wire and wrapped around with brown cloth, which comes to just above her knees.