Warning this post is not an advertisement for me to call forth Succubuses or Insucubus for free or money. This post is for people you have the spiritual nature of a Succubus or Insucubus so if you can not contribute to this post appropriately with respect then this post is not for you. If you are a Succubus Natured Person or Insucubus Natured Person simply type in Succubus Natured or Insucubus Natured.
I believe they're referring to succubism. Energy theft which heightens the victim's output via coitus. If I'm giving them the benefit of the doubt, anyway. Based on their intro post they're "other-kin" so they in someway identify as a succubus? I don't know too much about that sort of thing as I'm highly skeptical of it.