What is the definition of Opened Fear?

"Opened fear" is like the moment a magician pulls out a rabbit from his hat and says, 'Behold, I've got your secret!' But instead of a rabbit, it's your own personal dread. Imagine this: "The old clockmaker's workshop suddenly opened fear, because it turned out to be a time-traveling mausoleum." Now, that's a story that'll have you both laughing and fretting.