My two are very curious as to the whole how do babies get in mummy's tummy and how do they get out again issue.
A few months ago they asked if it was like the story of the wolf and the seven little kids, did i just get my tummy cut open, babies pulled out and sewn back up again? I had a c-section so, well, yes.
One then asked how I knew if they were boys or girls, to which the other replied silly, she had to wait for our hair to grow and if it stayed short that would mean we're boys and if it grows long we must be girls.'