Once upon a time, there was a young boy named Tim. Tim had a big stomach because he liked to eat a lot. One day, Tim saw his mom put a letter in a box. He asked, "Mom, what are you doing?"
His mom said, "I am mailing a letter to Grandma. Do you want to help?" Tim was happy to help his mom. They put the letter in the box and closed it.
The next day, Tim's stomach hurt. He told his mom, "My stomach hurts." His mom asked, "Did you eat too much?" Tim thought about it and said, "Maybe." From that day on, Tim tried to eat less so his stomach would not hurt. And he helped his mom mail more letters to Grandma.
