The argument about whether social drinking is permissible continues to rage. The truth about alcohol is that it is sinful and wrong to consume alcohol in any quantity for recreational purposes. It damages a Christian's influence, destroys our ability to control ourselves, and leads directly to more and more sin. Because your attitude toward alcohol directly affects your children's attitudes. Watch for progression.
Kids begin with alcohol by experimenting with it.
You can detect this stage by watching for heavy usage of mouthwash, or new friends. Changes in mood and temperament develop once a child is seeking out alcohol. Irrational behavior like stealing, dropping out of school, or constant rebellion indicate addiction. Obviously, the time to stop this sinful problem is in the earliest stages. Even if the answers are quick negatives you have at least posted a notice to your teen that you are on guard and watching.