The wife of a prisoner wrote her husband and complained to him for getting locked up and leaving her with all the farm duties to do by herself. She was particularly upset that she would have to plow a 40 acre field to plant the potatoes.

The prisoner wrote back telling her not to plow the field because he had hidden money there.

Later, he received a letter from his wife saying his mail must be censored because the sheriff and his deputies were out to the farm digging through the field but not finding anything. She asked what she should do next.

He answered, "Plant the potatoes."