Hooray! Received my Rematch gift in the mail yesterday, and I'm really excited to see what it is! My SS told me this story as a prelude:

a BOX OF MYSTERY holds untold delights

There was this kid who ordered a BOX OF MYSTERY from the back of some magazine and waited 6-8 weeks for it to arrive

And when the BOX OF MYSTERY arrived, he realized that whatever he hoped was in the BOX OF MYSTERY would probably be more interesting than what was actually in the BOX OF MYSTERY

And to this day he has not opened the BOX OF MYSTERY