DADDY IS A GAS

All the first grade children were sitting on the floor at my feet. I was in the rocking chair, having just completed reading a story. I asked if there were any questions and a little boy raised his hand. When I called on him he asked "Why does my Dad fart so much?" That was three years ago and I frequently see the Dad when he comes to pick up his son and it always brings that question to mind. Maybe I should ask him?