DEAR ERIC: When I was 16, more than 50 years ago, I had a girlfriend who lived in a nearby city. One day, I brought a joint of marijuana along on a visit. While her parents were away, we smoked it in their garage. Suddenly, we heard a car drive up and stop. In walked her father, a policeman, and her pastor. That is, they were all the same person. Her father was the police department chaplain. He smelled the smoke, took me down to the police station, and then to the bus station, and told me to never come back to their town again. I didn’t. I exchanged one card with the girl, a few months later,…