I'm going to get a t-shirt made,but need a positive slogan..?

about not doing drugs,crack,etc.what would be a good slogan?I'm going to get a t-shirt made,but need a positive slogan..?
Hey you! Don't do drugs and stay off the crack!
You could find pictures of Great People who abused drugs (i.e. Whitney Houston, etc., etc.) and ask what do they have in common on the front.
On the back they all used drugs.now look where they are. With pictures of them all drugged out...
You could do a collage of pictures from the internet.
be smart, live drug free..
Just Say NO!