At what age do u think is right for a parent to start discussing sex with their child. I think You should begin talking to your child about sex very early. Teach your child that his or her body is a gift from God. The age of 3 or 4 years is okay to teach the children the difference between good touches and bad touches. They should know that unless someone is helping them take a bath or go to the bathroom, no one should touch them in their private parts. Let the child know it’s okay to say no if someone tries to touch them there, even if it is a family member. Can someone please tell me if i am wrong and when or what to tell your children about sex?