The only line that has ever worked for me was by a Random. Having had a cigarette before getting on the subway, a young attractive woman standing near me whispered in my ear.
"You're too sexy to smoke."
My reply was a simple, "Huh?"
So again she repeated, "You're too sexy to smoke. A good looking man like you doesn't need a cigarette to look sexy."
At this point, unsure if she was hitting on me, I asked if she used this line to hit on every guy. She replied, "You're obviously gay so I'm not going that way. But my father died three months ago of cancer so now I'm doing what I can to get people to stop smoking."
Handing her my pack of cigarettes, I asked her to throw them away for me. As we rode downtown I thanked her, and we chatted until my stop. Getting out of the train, a deep inhalation filled my lungs with fresh air as I headed to the deli to buy a fresh pack. Because even though I wasn't ready to quit smoking, I did want this girl to feel better in the light of her loss.