It's not really like it's embarassing where I'm from, but I've always wondered: in USA, when you make a joint, you don't roast the cigarette? I've never smoked a joint (I suppose it's actually a spliff) in Denmark where the cig wasn't roasted, and I've heard a number of reasons for this, and I never really seemed to be able to find a definite answer.
Sorry if this post is against the rules, please remove it if it is, I'm just curious