Cigarette smokers understand the damage they're doing to their bodies. That's why "shocking" anti-smoking ads like these blackened lungs won't do anything to stop them.

At this point, everybody fully understands what cigarettes do to people. Yet smokers don't care, they just like smoking. Maybe we should just respect that instead of grossing everybody out with a pair of blackened lungs that double as cigarette lighters. Every time someone uses them to light up, they're just laughing in the face of this well-meaning campaign. [Street Anatomy via Boing Boing]