PARENTS GIVE DAUGHTER SEX LESSONS!?

i heard about that couple back east who gave their daughter sex lessons by 'doing it' in front of them, and it brought to mind a time back in the 5th grade when a girl in our class announced to us all that her parents filmed themselves when concieving her, then later let her watch the film!?...that kind of thing would NEVER have happened in my family, so i remember thinking it was kinda cool...but this was back during the 1970s when everybody had healthier overall attitudes about sex and sexuality...