Peter just shrugs in true sixteen year old fashion. Someone just thought it was a good idea, probably.

"Ya got me." He answers casually. "Limited information and research, People thought it made them look cool, and hey, Nicotine is highly addictive. As far as to why they do it? Idk man, I've never looked at a plant and thought 'you, know what? I'm gonna wrap that into a pieces of paper and smoke it.' People be weird, yo." You are accustomed to gen-z slang, aren't you Azula?