So we're driving in the car the other day and my daughter says, "Why don't you smoke?". My wife, seeing the opportunity to pounce on this issue early in our child's life, says "Because it's dirty, ugly and makes you sick." The reply is "But Uncle Don smokes." Ah yes, throw it back in our faces. Mom says, "Yes but Uncle Don is old enough to decide whether he wants to stink of smoke and get sick and maybe die from it." "When I get bigger I'm going to smoke."
At least it'll be 12 years or so before the neighbor's oldest kid can buy her smokes. We've got time to fine-tune our spiel.