Dolly Parton was in a Health class with her elder brother, who was known for being very honest.
One day they had to go around and tell what they had for breakfast. Dolly said she was so embarrassed at how poor they were that when it was her turn she lied and listed off every breakfast item she knew name. She realized with horror that her brother was sitting behind her and was going to expose her to the whole class as a liar.
As she sat there nervously the teacher called on her brother and asked what he had for breakfast. He paused a second and then calmly said, “I ate the same thing she did.”