How many of you that have posted in this thread so far have kids that are over 18? I have two, a son (18) and a daughter getting ready to turn 21. We did our best to raise our kids to the best of our ability. My daughter is a senior in college working on her BS in Nursing and my son is a sophomore working on his BSME engineering. With all that said, all the parenting skills in the world do not take the place of your kid's peers. You can teach them right from wrong but it only takes one stupid kid to influence your child and take them to a place from which they may never return. Drugs, alcohol, sex, and any number of cult like groups from gangs to emo's to goth's to some religious groups . While we were very lucky and still have a very close relationship with our kids I watched many "good" kids from strong families go south and never fully recover.
Now to plan "B," forget for a minute your own righteous moral (or immoral) values. Plan B is at least an alternative. For those of you who think it will lead to more promiscuity? Ha, that's a laugh. Don't any of you remember what you were thinking when you were 15? If you tell me anything but girls you are lying or homosexual. No, it won't lead to more teenage sex but it could prevent a life changing mistake.
In a perfect world abstinence is king, our kids do no wrong and are raised by responsible parents. Unfortunately this is not a perfect world and you just have to do your best. We taught our kids abstinence is best, but we did not leave out the part of condoms and birth control pills. To do so would have been irresponsible. And lastly, to the above poster who thinks, even for a second, that a threat of bodily harm to a guy who fools with your daughter will change their behavior - let me know how that works out lol. Talk big now but that will change, trust me.
The most important piece of advice I can give a parent is this:
Keep your kids busy from the time they are two til they turn 21. Get them involved in church youth groups, sports teams, school plays, boy or girl scouts, gymnastics or anything. DO NOT let them raise themselves or spend all their time in their rooms or at the mall. If you follow this simple advice, then you are helping "choose" their peers by encouraging them to participate in some activity. My kids both chose sports and one played and the other is still playing soccer at the collegiate level. If you do this, chances are your kids won't ever need to take that pill.