Dude I am in Med school do not tell me I am wrong about something that is absolutely factual. Smoking marijuana... especially the way most children do like in bullshit blunts... makes you’re breathing slow down substantially. As your choking and coughing because of the marijuana smoke your lungs are under extreme duress. If you add opiates in the mix... it's bad. Opiates make your breathing shallow, when you need to be taking deep breaths. When your DONE smoking the marijuana you are so relaxed that you do not realize you are taking smaller breaths and it is hard to breathe from all the coughing. Combining marijuana and opiates could shut down your lungs... don't tell me I am wrong without looking it up... science is life.
http://en.wikipedia.org/wiki/Marijuana http://en.wikipedia.org/wiki/Shallow_breathing 