And he's still an ***hole except when he's speaking directly to George and his family, and George just laughs it off. The guy is basically a sociopath who hasn't changed one bit. Does George really not see the kind of person he's dealing with, or is he just banking on Biff's fear of him (over something that happened 30 years ago) to protect him? It's poor judgement. Even if Biff's actions in the past weren't enough to say, "get off my property and never come back", his present actions are.And that last bit troubles me no end that while they probably do remember we seem to forget that on that same night Lorraine is nearly raped by Biff and this conversation happens and it just doesn't feel right. Not to mention as others have said that he still hangs around their house being their lackey now..
Come to think of it, the implication there is that George likes yanking Biff's chain enough that I've gotta wonder what kind of person George really is.