It was another day in this new world for Loki and today seems to be some sort of special day. He had noticed while walking that the neighboring houses were decorated with different kinds of spooky and creepy objects, from spider webs to fake skeletons. Based on the memories of the previous owner of his body, today was a day called Halloween.
Even though many had forgotten the original purpose of the day and it had been reduced to a day for kids and adults to have fun, the previous Loki who was a bookworm knew the original intent of the day. Today was supposed to be a day when ghosts would roam the world, and the wearing of scary costumes was to ward them off.
Even someone like Loki who came from a world that was considered to be a fantasy didn't really believe in such things as ghosts.