How can I make my point clear without sounding mean?

I'm a 20 year old university student, and I have a number of good friends here.





Some of my friends drink (some while underage) and some of those same friends have recently admitted to using pot and selling pills.





I don't really care what they do in their own time, since they're adults and free to make their own decisions and suffer their own consequences. What they do in the privacy of their own homes is their business.





But I feel that it becomes my business when they are in my home or in my car, and I do not tolerate underage drinking or illegal drug use. This does not mean that I think less of them as a person or am unwilling to continue our friendship... but I absolutely won't have them coming to my house drunk or having pot in their backpack when I'm driving us to the movies.





How can I make this clear to my friends? I've known them for three years and only found out about the drug use last week. Again, it's not that I think they're terrible people or don't want to be friends... but there's no way in hell I'm getting roped into their drugs and alcohol sh*t.





I'm not trying to be a douche, but this point is non-negotiable... until I have a promise from them that they won't be possessing illegal drugs/under the influence in my presence, I'm not having them over or driving them anywhere.How can I make my point clear without sounding mean?
You wrote your own answer. Just simply tell them what you wrote in that last paragraph and say that you want to be in good conditions with them. I think it's great that your not into that. I don't like drinking either and have never done drugs well im only 17 but yeah never smoked that **** and never will. Good Luck tallking to your friends hopefullly they understand you.How can I make my point clear without sounding mean?
well i think the way you stated that is perfect. Stand your ground. Be firm tell them whats on your mind. Explain how unfair it is for you to get in trouble for the pot they have or the booze they drank. I would rather loose friends then a clean record
Just be straightforward about it and ask them to leave their drugs and drinks at home. Tell them you don't want that stuff around you. It's not ';mean';. They should be able to understand and respect it.
I would come right out and say that I don't want them coming into my house/car under the influence or in possession because I am not prepared to take the risk of getting caught.





Remind them what the punishments are for possession/dealing in your area and use this for back up. You don't have to be nasty, just to the point that you will not risk your **** for them.





If they have any respect for you they will abide by what you say, if not then they aren't worth knowing in the first place.