The best way to make me immediately dislike you is to get my name wrong.  Call me Bill.  Call me Rashad.  Call me Steve [1].  Either way, call me "not your friend any more" because that's what I am.  I don't mind if you say, "What was your name again?"  Everyone's bad with names.  Chances are I don't remember yours either.  Just don't call me something I'm not.  For some strange reason, I take it as an insult, and I'll pretty much never forgive you.  I take it really personally, and I think it has something to do with thinking I must not be important enough for my name to be remembered.  In some circumstances, I'll readily admit to this like Lester Burnham in American Beauty:  "It's ok, I wouldn't remember me either."  But if you go out on a limb and get my name wrong, you're immediately put on my List of People Who've Gotten My Name Wrong.  For this very reason, I almost never use a person's name when I greet them, just in case I get it wrong.  I say, "Hey, how's it going?" or "It was good to see you again".  I could be completely sure of their name and I could be continually repeating it in my head so I don't get it wrong, but I end up not saying it because I don't want to cause what I would perceive as harm.  Yes, I have problems. 

[1] Calling me Steve will put you on the List of People Who've Almost Gotten My Name Wrong.  Steve is quite phonetically similar to Dave, so I'll let it slide.  Once. #psychology