It is very interesting question, and perhaps the expression “talking about the birds and the bees” represents the most common version of our attempts to do this with some degree of biological accuracy. The jokes and devious explanations used by some parents also acknowledge our discomfort in dealing with the subject.
I will share my experience.
Lets start with, my oldest was present at the birth of her sister, she was 22 months old at the time. She was in control of where she wanted to be, what she wanted to see and so on. At one point she took my mom by her hand and went to another room to play and came back when the baby was out.
At around 4-5 years old she started asking question about how did she got there, inside the tummy. As I am a fan of natural home births, she knew about how the baby grows inside mommy, how it comes out. You can find very beautiful videos on Youtube. And she liked to watch them with me.
I have found very good article, that I liked on Babycenter. It says:...Ask, then tell.Make sure you understand what your child is really asking. Linda Eyre, co-author of How to Talk With Your Child About Sex, tells a story about a boy who asked his mother where he came from. Thinking he wanted to know about the facts of life, she sat down with him and told him everything. Then the boy told her that he was just wondering where they lived before they moved into their new house.
To avoid a misunderstanding, respond to your child's questions by asking: "What do you think?" Many young children spin elaborate fantasies about how babies are created. First get a handle on what your child is thinking. Then you can use that as a launching point for a more helpful discussion.
"How does a baby get in there?" A sweet and simple explanation should satisfy most young children. You can say something as simple as, "The daddy gave love to the mommy and together they made a baby." Or "Babies are made when two adults love each other so much that they're able to create a baby inside the mommy."
If your child wants more detail, you can tell her that a sperm from the daddy joins an egg from the mommy and together they grow into a baby....
I will also add, that in some cases it might be OK to say more, for example: an honest one that doesn't try to offer a college course in human reproduction in one session. Tell the child that, in a sheltered place inside their bodies, mothers carry a large number of tiny eggs (without shells) and that these eggs drop down into a space in their bodies called a womb or uterus about once a month. Those eggs can’t become babies until the father puts into one a special substance called sperm that comes out of his penis. When this happens, we say that this special egg is fertilized. It attaches itself to the mother’s womb and grows there for about 9 months.
Some children will get bored with these answers and will leave you alone. But ofcourse there could be children who are more inquisitive and will create more questions. In that case, GOOGLE to the rescue :DDDD
You can read more questions and answers, advice on haw to here at Babycenter. com Please share your experience, what would you say in comments below. I'm sure there are plenty of funny stories out there! :) The old story about the little boy who asked his father where he came from, got a long lecture on reproduction and sex, then said, “Thanks, Dad. But Jim said he came from Buffalo and I just wanted to know where I came from.”