Answer:
Say no. Simple as that.
Explanation:
You guys might be close, but when it comes to subjects like these, you really have to think. I know you don't want to hurt their feelings by saying no but, drugs aren't that special. Sure, they make you feel good but, your brain isn't fully developed yet, so it can do damage. Drugs are just bad for you period. If they get mad that you said no, they aren't your friend. They also aren't your friend if they try to peer pressure you to do drugs. It is your choice, so choose wisely. They shouldn't have asked if they knew you would be uncomfortable answering. It is your opinion, but in this case, which choice would do you greater good?