Yeah, I think it could definitely work in someone's favor to be a psychic vampire at times. It would probably be easiest to work on ppl weaker than yourself. I think I've done it unintentionally in the past...

Bro Z, yeah, your cuz sounds exhausting! LOL Are you ever like, "Shut up!" ? Because stoned or not I don't think I could take all of her yackity yack. But I think she's only a psychic vampire if she's using her power for her own benefit, she may just be obnoxious.