It’s an X rated world we live in and you will never be able to keep your kids (me too with mine) from exposure to it and from the rest of life that exposes them to it. All you can do is talk to them about it. Lead by your example. For instance, don’t watch porn yourself while you tell them how bad it is for them. It wouldn’t serve anyone in the situation very well if they came in and saw you watching porn. By no means am I saying you watch porn here, just using it as an example. Another example would be if you tell your kids they can call you to pick them up from a party because they were to drunk to drive and there would be no questions asked and then you ground them for being drunk.