Verb: The act of using purposeful confusion onto another person. If the person has no clue you were mind-fucking them, it is a successful mind-fuck. If that person suspects what you are saying or doing is a mind-fuck, it is an unsuccessful mind-fuck.
Dude, I just called Miranda to mind-fuck her, and she didn't suspect thing!
Man, I think I was just mind-fucked.
One of John's favorite hobbies is to call up random numbers and mind-fucks the people who answer.