By the time your teenager is able to make decisions for him or herself, you’ll have drilled into their head that drugs are a bad idea. Phrases like “Just say no,” or even the slightly more entertaining rhyme, “Crack is whack”, help. Though they all know that drugs are bad and that they shouldn’t use them, you’re worried about the other message coming from the media, movies, music, and general celebrity news, which tend to glorify drug use. If you aren’t or don’t know what the messages are, you should…