My parents were the same as yours when i was 14, and i can see them being the same with my sister who is about the same age as you. I found honesty was the best policy at that age, try to not make it look like i was hiding anything from them, tell them where i was going/when i'd be back etc then as i got older they became more relaxed and let me do my own thing. I don't think getting caught with cigarettes helped your parents either, with the whole "If he's smoking cigarettes, what else is he doing?" mindset parents can take, which is understandable really, especially at an impressionable age.