these "psychic vampires" usually misuse the term when labeling someone a psychic vampire and are typically the real psychic vampires themselves.
Real Psychic Vampire: "Fuck you, you psychic vampire, you only did something nice for me yesterday so I would be in your pocket today and could guilt me into making you coffee!"
GD: "Dude, you asked me yesterday the same way I'm asking you today, as a nice favor, but whatever man, if you're going to get bent out of shape I can just make my own when I'm out. (under breath: Paranoid Fuck.)"
RPV: "Fine, Psychic Vampire."