That's one of the best statements made in that topic here.Don't worry about pressure ... you will find out who your true friends are .. most should accept that you don't want to take that hit ..
It's quite interesting what you learn here about American highschool, being a Kraut who's aged 17, attending 12th grade of a German grammar school which means that I'm less than two years away from passing my Abitur (= diploma you get after passing your final exams on a German secondary school which is qualifying you for university admission or matriculation).
Coming back to the original topic here, I'd say it is very possible. If you do not want to take drugs, then just don't do it. If you're in some group of so-called friends who are putting the bite on you, I'd rather dissociate myself from them if I were you. All in all, I would not want to hang around with that kind of fellow-students. "Friends" is actually not the right term for people of that ilk, ecause, to be honest, what kind of friend is someone putting pressure on you to take drugs? They surely want to be tolerated consuming them, then they should tolerate the fact that there might be people being better off without drugs. Whoever feels free to try it shall go ahead, but who isn't interested in that kind of experience should not be forced into doing that.
It's pretty much the same with alcohol. Some like to have a beer once in a while, some not, some get drunk, some only drink water and Coca Cola, but who cares? I've never been talked into drinking something I wasn't willing to (liquor for instance, I really enjoy drinking beer or Hessian cider). Denying politely but firmly should be enough.
However, since we're on a board for musicians...er, well, bassplayers, sorry, just one thing: When you're into taking drugs, drinking booze, no matter else, please save it for after your band practice or gig. I had to see a band playing covers of rock from the seventies on some village's annual celebration that had to many beers in between the second and the third set. Never have I seen such an embarassing gig and heard such a tremendous noise...
