I didn't know there was a name for these things

[Secluded Crowe]

The closest thing I've heard about static charged shadows was when I was staying at a friend's house and I woke up late that night in the living room couch I was sleeping on. When I turned around there was my friend sitting on the recliner and her little sister sleeping on the love seat. What I saw shocked me, there were these small blobs of shadows that kinda looked like the static that you see on your t.v. They were all over her sister, mostly around her wrists and ankles. Her sister then started tossing, turning, and mumbling. Finally, they were gone. I asked her what in the world was that and she told me they are called shadow vampires and they feed off of your energy. I was just wondering if anyone has ever heard of this before?