My father is a wonderful man, I'm a spitting image of him, though he's extremely conservative; I'm a bit more moderate.

He listens to Bob Marley, Beatles, Floyd, Allman Bros, Grateful Dead, etc. and has thoroughly maintained he has NEVER smoked weed, despite the fact that he lived with my uncle (his best friend at the time) in engineering school, who did all KINDS of things. He knows I smoke, and he knows I am also an intelligent person. He jokes about it with me, but he has never told my mom- something I respect about him immensely.

My mom is a nurse, and another intelligent person. She has tried it, and has a kind of odd stance on it. She doesn't approve of recreational use, simply because it's illegal, but if the topic of medicinal pot comes up, she's VERY much for it. I told her a while ago I've smoked pot; I have fibromyalgia, IBS, and some mild situational anxiety, and I told her it really did help. SHE knows I'm intelligent, hard-working, etc, so though she was surprised, she was okay with it.

The point is, SHOW your parents you are responsible, hard-working, and intelligent. These factors greatly influence how they'll react to finding out that you smoke pot. Good luck.