A sexual attraction towards ghosts, poltergeists, phantoms, and/or demons. Sometimes a parasexual may be attracted to aliens or Sasquatch.
It's like when a parasexual wants to shag a ghost.
Or when you can't stop thinking about that sexy ghost from "The Grudge."
A sexual deviant, such as someone who is into bondage or kids. Like paraphiliac, but used as a sexual orientation rather than a disorder.
I've got this crazy fetish for rubber. Does that make me parasexual?