My house is a very open honest house when it comes to sex. I tell them the truth, mind you though my oldest is 19,18,17, the boys since their father was to shy to tell them or teach them it was me. MY daughter who is 11yrs old knows more about sex I think then most 18yr girls. I am very upfront and open and honest about it and always have been. My daughter though also started PMS at 8.5, which she was already prepared for. I have always believed that honest was the best thing when it came to my children. My daughter and I had the complete sex talk, she can tell you about every part of a man and women, details on how babies are made ect using the proper words. My parents however werent like that really but I also believe that times have changed alot. Hell I know that you sure didn't hear to many 9yr olds getting pregnant when I was younger. Although I wasn't raised in a house so open as mine is, I decided that there is nothing to be embarassed about when talking with your children, it is a natural enjoyable adult time. We have discussed alot of things in this house. Although at what age you talk to your children depends on the maturity level of them. My daughter is 11 but has been going on 30 I swear since she was 8.5yrs old. LOL I am also a firm believer that is the parents responsibility to talk with their children. Hell last year my daughter got a letter from the nurse to bring to me saying that they were showing a film about the Anatomy of a women and what causes their menstrual cycle ect.. My daughter said, and I quote "I could prolly teach that mom." I laughed a little and then she asked do I really have to sit threw it. I said, " no" and that I would call the nurse in the morning. The nurse said, " not a problem" as long as she could take the short quiz on it. MY daughter walked in that morning to school took the short quiz and passed with flying colors then got to come home for about another hour or so.