Quote Originally Posted by orangeman
Seeing as most of us already know this "guide to marijuana" I dont think it's really that important enough to be stickied .

The only thing I never read before is that all the unwanted particles in the lungs are coughed out when your high because of the expansion of the bronchi tubes, is this true? , where did you read this at? And if this is true why is there still tar shown on smokers lungs?
Yes, it's true. It's a common side-effect of THC that it expands your broncial tubes and is an expectorant. Cigarettes, on the other hand, constrict your broncial tubes.