Alex, in the movie Conspiracy Theory, Mel Gibson plays an eccentric character who believes in conspiracies. Gibson's character has actually been brainwashed by a secret government agency. This brainwashing purposefully imbued a desire to have a copy of Catcher in the Rye. Mel Gibson loses his copy and is immediately overcome with a desire to get another copy.
So that should help you understand my joke. And then you may have a chuckle