The idea that everything imaginable exists in a larger multiverse of mind. Especially that stories set in fictional places and with a lot of lore in them such as Star Wars, Lord of the Ring and Game of Thrones are real but exist in a universe accessible only through the third eye.
“I believe in multiverse-ism just like he believes in Catholicism”
“In my opinion Darth Maul is the strongest warrior in the multiverse”
“Playing Skyrim is good for your multiversal knowledge”