Do not do the last part. He’s a minor living in fear. Publicly shaming him like that will will almost certainly create an even worse situation if the asshole is prone to physical violence. The key here is for the kid to survive in the short term and escape once they either can get the courts to grant them emancipation or they turn 18. Then after that, therapy so they can learn to move on and thrive.
Agreed. Parents and kids’ childhoods do play a huge role in how they ultimately turn out. However, there are near infinite variables during their development, many of which are completely outside our control. The best thing we can do is like you said, educate, mentor, and physically and emotionally support them as best we can. Sometimes, kids just grow into douchebag adults.
Anyway, OP, at the party you should totally just act like Mac, Charlie, and Dennis when they steal Frank’s credit card and think they’re rich.