I've had this plenty of times, although I've role played as a cub I guess some people try and act as if the spotlight has to be on them or they feel as if they need attention some aren't giving them but some I guess just do it so someone can come over and perhaps they'll make a new friend but when it gets to the point where they run off, challenge things that are overall bigger than them. You just want to rub your forehead and be done with it, then when you talk to them about it, they do it again.
Perhaps when it comes to your groupies doing a thing, perhaps give them three warnings perhaps? If they want to act as if they're a troublesome child perhaps treat them as such. Hopefully they'll understand why. I know it's frustrating to handle cubs but most of them players do range to be younger than us but you do get players who respect people and even so, ask one of your group friends or even someone in the group to help you out. Go into whisper if you wish to make it seem easier on you and less stress on your shoulder.