John agreed to an evaluation of his cannabis use to appease his mother. The 10th grader cautiously acknowledged experimenting with cannabis after his best friend had been given some pot by his older brother. John asked his friend for a joint and they had smoked together half a dozen times over the past 4 months. He sheepishly admitted liking marijuana, but he also knew pot carried some vague risk for people his age. His mother was terrified when she saw her son looking at websites about cannabis, but when confronted, he was honest with his parents about his use. After talking with John, I wasn’t concerned that he was in any real danger. I taught him the signs of using cannabis too frequently, and we reviewed the reasons why he should delay use until he was a few years older.