It's kinda rude.Unless they get you high,too, and are just out right now.Even if I'm invited to someone's house to smoke, I still bring my own,and I match them bowl for bowl.If I have to buy from a dealer, I always give the person who went and got it a bud out of it.I don't invite people over to smoke with me unless I already have some.It's ok if they're out once in a while,but they better be a good friend and remember to share theirs with me when they do have some.Somebody mooching off of you all the time is not cool.