My parents don't know yet (although they possibly suspect something...who knows, really). But when I have kids, I couldn't be a hypocrite and not let them smoke. My rules woud be simple.
1. Be 16, cause that's when I started
2. Have a 4.0, because that's what I have in school
3. Don't drive
4. They can smoke in the house, but they only can bring friends whose parents are okay with them smoking...I don't want any lawsuits on my hands.
5. They must give me a hit whenever I so demand.
6. No smoking on school nights

Yeah but that's pretty much it