My mom knows that I smoke and she isn't really thrilled about it but she tolerates it. Every now and then she will try to corner me about it and call it addicting. I take these opportunity to educate her about the positive benefits of cannabis and how it has directly impacted me. I've also educated her on the government's war on pot and their lies. She, like many others, was taken aback by the fact that doctors can legally prescribe Cocaine and yet not pot. I find facts like these that totally blow the lid off of the situation are useful to have under ones belt.

Coming out as a pot user will probably take some slow chipping away at the layers of propaganda your parents have absorbed. Don't give up and never get hostile. Come prepared with information, pamphlets, etc... This will make it less likely for them to think of you as a junkie which is an understandable reaction given the lies told for so many years.

Don't be afraid to be honest. My relationship with my mom is a lot better because she knows.