I thought young people forgot all about that meaning of the word "spook" - hell, it was a relic word when I was young, which is exactly why it was used in Back to the Future as something from the past that no one did any more (it took me this fucking long to spot the bottle opener bit, too, because I've always used church keys, and I actually have no idea when twist tops crept up because of plastic bottles taking the place of glass at about the same damn time(?))