I was offered when I was a child and teenager in school, and I always turned it down. I got invited to parties where drugs would be and I turned down the invitation. I wasn't very popular because of it and I had few friends, but at least I was drug free. I have a clear conscience on that. Many kids did it and got away with it too. You could tell them by the glassy look in their eyes, or they would hide their eyes with sunglasses, and would be clumbsy and always had a smile on their faces. I found I couldn't trust someone who always smiled, it was a good sign that they were on something.