Topic on Talk:Demonic Possession

The disclaimer (I forgot how was it called) says that Self-Demostrating articles should be subpages, not the main page. I could do a description for the trope that be not a self-demonstrating article, but I don't know what to do respect the humoristic self-demostration. It could be a subpage, but the current self-demostrating description seems to have been inherited from TV Tropes when the fork happenned, and I don't know how would copyright work when creating a subpage knowing this. I think creating a self-demostrating subpage from zero would be better, but I would rather asking mods first.