Tell me a story, please

As a mother, how many times have you heard this request? for me, countless.

We were at dinner table, while waiting children to finish their meals (usually very slowly), I decided to tell them stories when they were young:

"Mum, how can you eat me up?"
When I was expecting my second child, one day, our first boy, then nearly two years old, asked me quite suddenly. "Mummy, how does baby come out, for there is no door?", I told him, "don't worry, Doctor will open a door for the baby, you were inside mummy's tummy before right? see now here you are." He was thinking over my reply, not quite satisfied, then he asked;" Mum, how can you eat me up?"

My children heard this story, they almost choked with laughter.