People who, whether out of mental/social dysfunction or excessive movie/book/game fandom, like to pretend (in a non-ironic manner) that they are vampires. Includes Anne Rice fans, fans of books about sparkly vampires, certain substrata of goths, and the sort of really strange people who post on I'm-a-vampire internet boards.
"Let's go to the movies."
"Oh, not tonight. That new vampire movie is out, and the place will be choked with the Poseferatu. I don't want some fat guy in a cape getting pancake makeup on my jacket."