Just come out and say it. Your stupid enough to be smoking it, so you should be stupid enough to tell them what your doing. But that's only if you are smoking. If your friend or family member is doing it and they want to know, then tell them the same thing that I said.
.I dont think there is a good way, unless they dont really care, or they smoke too and you have someone to do it with.lol
but I dont see why you would wanna tell anyone in your family either way,,
You dont? Why would you?