Misaki_Chi wrote...
I think I was about 7 or 8 when I started to understand conception.
This was about the time when I really got to know how babies are made as well, yes. We had some quite nice books at home that really explained it well for children to understand. Hard to say how well they'd work for a 4-year old, but I wouldn't be surprised if they'd understand it better than you'd expect. My nephews have constantly surprised us with their knowledge of various topics over the years, for example perfectly describing the solar system way before even getting to school. I do agree with freaky, though, it's better to just explain it how it is, details can come later. Any silly tales will only come back to haunt you later when they get the (possibly not quite correct) information from less trustworthy sources since they won't trust you to tell them the truth or think you would be too embarrassed to talk about this with them (and so would be they, since it's clearly been a taboo so far).