Do it Catholic style and show the kid this:
I'm reviving this thread because the issue of talking to kids about sex has come up for me at home. Mine are 5 and 7 and ask questions now and again and I'm not very good at answering. My parents never ever talked to me about sex. When I was little I was told that you make babies by getting married and praying for them. When I was old enough to know better than that, the only thing that could pass for a sex conversation was my mother telling me "whatever you do don't get pregnant!"
So my daughter asked me the other day about how you make a baby and I fumbled something about two grown ups getting together so the man could put his penis in the woman's vagina and make a baby.
What's a penis?
Your weiner.
What's a vagina?
Your girl parts.
That's gross! That's disgusting!
I know, but grownups like to do it.
Any ideas about how to do a better job of explaining to little ones? Are there any good age appropriate books?
When they're 5 resp. 7 years old, kids have one or two specific questions
and that's the end of it for a while. I used to have a cute cartoon video
explaining the facts of life in children's terms, and my daughter saw it first
when she was around 7 or 8, but it took another few years until she really
got interested in having sexual relations and pregnancy explained to her.
Our local museum has a very good display where the different stages
from conception to actual birth are graphically shown on plastic models
and via video. You might want to check out the museums in your area.
Also, try to answer just the question that is asked, no more and no less.
Google can also help find pictures and explanations that are age appropriate.
Good luck, FreeDuck! You'll get some really cute questions from your
kids. Little Jane asked me one time how long a baby can be nursed and
when I told her that it can be up to 6 months or longer, she replied: "eeewwwww the milk must be real sour by then"