It's pretty easy to score if you have the right connections. Being a delinquent in high school helps, but no so bad that you fall into the nasty people but not too good that you fall in to the "Yo wanna smoke a fatty after school" crowd. Casually falling into the group of "Hey wanna smoke a joint and watch Batman" is usually a good place. At the point you start to age together and they tend to continue to be genuinely fun and enjoyable people and always just let you smoke with them for free. The only rule is that you never ask where it came from. Nobody really knows, not even your friend. Nobody.