A Sunday school teacher was telling her pupils the importance of making others glad.
"Now, children," she said, "has anyone of you ever made someone else glad?"
"Please, teacher," said a small boy, "I made someone glad yesterday."
"Well done. Who was that?"
"My granny."
"Good boy. Now tell us how you made your grandmother glad."
"Please, teacher, I went to see her yesterday and stayed with her for three hours. Then I said to her, 'Granny, I'm going home,' and she said, 'Well, I'm glad!'"