One of the things that you need to have for a fun game is players who are mature enough to accept the DM's rulings without a lot of arguing, and that's probably too much to expect for most (but not all) 13 year olds. Heck, it's probably too much to expect for a lot of (supposedly) adult gamers as well.
Your best bet (20+ years gaming experience) would be to exclude (kick out) problem players and look for more mature players to replace them. Give the problem players a warning and then follow through.
It'll suck to tell your friend(s) that they aren't welcome to game, but it makes it much more enjoyable for everybody else once they are gone, and that's part of the DM's job.
Any game related problem ultimately rests upon the DM's shoulders. The longer you ignore the problem, the bigger it gets. I've seen situations like this escalate to the point where all of the 'good' gamers left to form their own group, leaving the DM with only 'problem' players. How fun do you think that was?
If they (meaning the problem players) come back later and want to game again, give them a chance. You'll know pretty quickly if they've changed their ways or not.
As always, just my opinion.
Your best bet (20+ years gaming experience) would be to exclude (kick out) problem players and look for more mature players to replace them. Give the problem players a warning and then follow through.
It'll suck to tell your friend(s) that they aren't welcome to game, but it makes it much more enjoyable for everybody else once they are gone, and that's part of the DM's job.
Any game related problem ultimately rests upon the DM's shoulders. The longer you ignore the problem, the bigger it gets. I've seen situations like this escalate to the point where all of the 'good' gamers left to form their own group, leaving the DM with only 'problem' players. How fun do you think that was?
If they (meaning the problem players) come back later and want to game again, give them a chance. You'll know pretty quickly if they've changed their ways or not.
As always, just my opinion.