Mens, Womans and Childrens

"Daddy, why do some mens and womans have one children and some have two childrens and some have three childrens?"

"What a good question, my darling. Well, first of all, some mummies and daddies decide they want one child, other decide they want two, and others three. And there are some mummies and daddies who want even more. On the other hand, there are some grown-ups who don't want any children at all."

"I don't want to have any childrens when I'm a grown-up."

"Really, my love? Why's that?"

"Because I don't like-" she cups her hand to her mouth and whispers "sex!"