As if by magic?

[Urchin]

Hi
My little boy is almost 4 and keeps asking how the baby got in my tummy.
At the moment we are just saying that mommy and daddy put it there with magic!

What did you say?

 

My OH got told when he was a kid 'It's a little bit of mummy and daddy mixed together which grows in mummies tummy'. Although saying that -it mentions nothing about how it got there i'd stick with magic if it works!