Guardian: o wanders into a classroom full of five-year-olds, sits down, pulls out a packet of cigarettes and starts to smoke them, exhaling puffs of cancer-inducing haze that waft into the little kids' faces.
"Please stop that," pleads one of the children. "My mummy says smoking gives you cancer."
"Rubbish," replies the smoker. "People have been dying of cancer ever since humans have walked the Earth. How did the cavemen die of cancer before cigarettes were invented, eh?"
Clearly, our cancer-stick...