Frankenstein's Monster

In reference to the fictional character in Mary Shelly's novel Frankenstein. What happens when you mention a thing you like (e.g. band, movie, etc...) to someone and they become a cult follower of said thing, taking it to the nth degree.

Clarence: I watched Fight Club with Nick yesterday and I think I've created a Frankenstein's Monster; now all he wants to do is fistfight people and pretend he's got split personality disorder.

Joe: Dammit, is that why he hit me in the ear just now!?