Before you talk with your child, decide what you're comfortable sharing. Then, decide what is appropriate to share with your child. Younger kids see life as right and wrong and need to hear simple, clear guidelines about God's gift of sex. Older kids see things differently. As the mother of older teens, I've been shocked at terms that have crept into our dinner-table discussions.
Teens tend to latch on to whatever is juicy or somewhat gross.
If possible, avoid over-reacting. Let your teen talk it out. I recently became a Christian. I've taught my kids all about Santa, but now I want to make some changes. A. Growth is a characteristic of a healthy parent.