Illicit drug users aren't the smartest people.
Well, my husband and I go to a popular Mexican restaurant with a lady friend and I order a Margarita - one of those will last through my entire meal, drinking it slowly. The drinks arrived (I didn't know this restaurant puts in two shots of alcohol in there). In a short while, I couldn't see straight and I mean just that, I was a mess. My husband and the lady were having a great time laughing at me but I hated that condition. After the meal, husband had to help me to the car.
Now, at any restaurant, I always ask the waiter how a drink is made at that particular restaurant.