Quote Originally Posted by hugs not drugz
does anyone have any advice? and sorry if this bored u.
Well, if your brother IS truly smart, then realize all of your assumptions may be wrong.
The only way to really find out if it's safe ground to tell him, is to talk to him about it. But make it seem like you're not necessarily against it, but that you're completely lost as to what to do about some situation, like a friend keeps trying to get you to smoke, and you've read that it's actually harmless, but you don't know if it's ok. Ask him what he would do.
Play it very cool, try to think tactfully, and always keep the conversation geared towards the idea that You know nothing about weed.
My family is very fucked up. You have to be very manipulative/strategic to survive, so realize that if you and your brother don't trust each other a LOT, he may very well already smoke all the time, OR he may be still be completely ignorant to it.
Otherwise... You could always ask him to keep it between you two, and show him Erowid.org, and have a deep conversation with him about the truth of marijuana, and then plan a night with just the two of you, get stoned, get some pizza, and watch a movie. Show him the way.