Scientifically-speaking, there are only three kinds of vapers in NYC: chill advocates, unrepentant Bros, and Macklemore-lookalikes who insist on acting like every waking moment is fodder for a montage scene in the true life MTV documentary of their lives. Our vaping hero in the photo below falls decidedly in the third category.

Vaping while sitting with your legs dangling over the subway tracks seems like an A+ idea. pic.twitter.com/YcTLgowMNp — Lindsey Adler (@Lahlahlindsey) March 22, 2015

Lindsey Adler snapped the photo of Macklegs contemplating smoke around 11 a.m. at the A train platform in the W 4th Street subway station. And he wasn't just lost in thoughts of artisanal Kombucha recipes: he was whistling. "The whistling was so disconcerting," she told us. "I walked to the other side of the platform." We assume the whistling went a little something like this.

People lose their legs (and other body parts) all the time doing careless stupid stuff around the tracks. For example: "Man's Leg Severed By 1 Train After He Dangles Legs Over Subway Platform."

Bottom line: don't be like Macklegs if you want to keep your legs.