A: I have a stomachache. B: Is it something you ate? A: Maybe. I'm not sure. B: What did you have for breakfast? A: The usual, cereal with milk and a banana. B: Maybe the milk was bad. A: It didn't smell bad. B: Maybe the banana was bad. A: No, the banana was delicious. B: Maybe you just need to go to the bathroom. A: No, that's not the problem. B: Maybe it will go away in a little while.