I've been wondering lately if one would consider a cigarette and/or cigar as a drug. According to faithful dictionary.com, a drug is: A chemical substance, such as a narcotic or hallucinogen, that affects the central nervous system, causing changes in behavior and often addiction.
This would be the definition most people would use, but another one could be A substance used in the diagnosis, treatment, or prevention of a disease or as a component of a medication.
So in reality, is a cigarette a drug? No, if you refer to definition #1, it does not effect the central nervous system other than the addiction, but it does damage organs such as your lungs immensly.
And no i'm not a drug
addict 
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