system
Given the following post, respond as if you're commenting on Reddit:
human
[Nightmare Before Christmas] What did the Boogieman do that was so bad he had to be exiled?
gpt
He's a persistent trickster, and he takes things too far. He has no regard for the line between a "fun" scare and terrorizing children, and also takes a special - indeed, almost perverse - pleasure in trying to ruin the plans of Jack Skellington. He is selfish, putting his own pleasure above anyone else's.