This is a very difficult subject to handle when they are so young. You are right, once the other babies start appearing, so do all the questions. Having a daughter and a son, I found that the girls are even more curious. This is usually because they want one too! Our desire to be mothers starts when we are babies ourselves. My daughter was 3 when my son was born. She wouldn't let up with the questions. She was very temporarily pleased with vague answers. I started with just saying that God had created mothers with a special place that babies grown in inside of the mommy called a womb. She did ask where they come out and I did tell her that there is a place called the birth canal that the baby travels thru. I felt that she needed to hear things that were truthful. I didn't want to make her afraid. We also have to be careful how we explain things because we know they may repeat them to their playmates. There is a very fine line. She later asked how babies inside the mommy eat. So on that conversation we talked about the cord and the belly button, etc. She was fine with that, as well. As I said, the vague answers lasted a little while. She came back to me at one point (around 4 yrs.) and asked, "On my body where will my babies come out?" OK, so much for the vague answers. Obviously, each of us have to be comfortable with this conversation, and we need to present it in a natural, healthy, honest way. We want them to grow up with the proper information as well as feel it's normal to ask questions and that they can come to us.
So, here is my answer....
I asked her if she understood were her pee pee comes out and were her poops come out. Did she understand that they don't come out the same hole. She said, "I know that mommy!" I then held up 3 fingers. I pointed to my first finger and said ladies have three holes. Still pointing to the first finger I explained the first hole is for the pee pee, pointing to the third finger I explained the third hole is for poops. Now on ladies we have a hole in the middle were the babies come out.
I talked again about the birth canal and used the correct name for the middle hole.
Here's the funny part...
Her eyes became wide and she said those big babies come out a tiny hole like that??? So I did my best to cover that question. Then she said I have one more question for you!!!!
I thought oh no, please, no more questions! I said OK, one more question.
"MOMMY WILL YOU HAVE MY BABIES FOR ME?" You've got to love kids.
I guess, what I am saying is, keep the answers as short, and honest as possible. Sometimes we answer more than they are asking. We don't need to lie, or make them feel like it's a dirty question. We have to be careful of our responses, both verbal and body language.
The "facts of life" were answered a little here and a little there. We found that there wasn't much to cover on the "big talk" because it was so gradual over the years. Most had been covered already. It was more of a conversation to wrap up the loose ends, and to make sure everything was clear.
Take these times of conversation and incorporate the issues of what is appropriate too. Like touching. Who can touch and were. They need to understand, for example, that your doctor can check you/touch you in a place that your friends, or teachers, etc. are not allowed to. Teach them how to say NO. We can use these opportunities to really educate, connect and grow GREAT emotional and verbal relationships with our children. Let's face it, we'd rather they ask us than their friends. Nothing my children come home with from their friends has been appropriate or even accurate, for that matter. The great news is, they told me and asked more questions. SOMETIMES, it means you have to call another mommy. Unfortunately.
I found that each question and answer lasted about 3 months and then she'd be back with the next level to the previous question. Yes, she did probably learn more than most kids at the same age. You have to decide for yourself what is appropriate for THAT child. There DID come a day that she asked a question that required to specific of detail for her.
I told her that she already knew a lot more than most children her age. The question she was asking was just a little bit too grown up for now, that I would answer her when she was a little bit older. She was OK with that. For a little while. :)