Sam's Onion field was known as God's Thumb. He used the onions from God's Thumb to help people, Sam claims that his onions can fix stomach aches, tooth aches, measles, and other things. He also claims that it can fix Mr. Collingwood's bald head and sprout a mane like Mary Lou's. ''Just rub this on your husbands head every night.'' Is what Sam said to Mrs. Collingwood.