The act of inhaling and exhaling from an electronic cigarette. A better definition of vaporing through an electronic cigarette rather than "smoking". It would not make any sense if someone said they were smoking an electronic cigarette as they generate water vapor.
I was vaporing outside the bar to avoid annoying the hell out of the drunkards and bouncers with the fog getting in their way.
"John: I feel like meh. I don't feel like smoking either. Especially when I quit. I would smoke if it didn't have the harmful substances.
Tom:Really? I'll be vaporing my e-cig and you can sit here contemplating the usual.
John:Hey! Can I try it? Finally something better than those cancer sticks!"