By: Addison Wylie Happy Slapping is a movie that slowly won me over.  It’s a film that’s difficult to get used to, but I’m glad I finally did. That said, I am torn.  Despite my surprised reaction, Christos Sourligas’ film is something I can’t outright endorse.  At least, not without a few warnings and reservations because of how it was conceived and how it ultimately looks on screen. You may have heard of Happy Slapping…