I can see Peter telling Neal not to do something stupid or idiotic, and we know that Peter asked Mozzie to tell him if Neal was about to do something stupid. But for Peter to say, directly, "Neal, you are an idiot"... well, I'm of mixed opinions, really. I can see Peter doing that, but more out of frustration than out of teasing. Peter still wouldn't mean it, but I can't quite see him using such terms just to give Neal a hard time. But that has a lot to do with how I personally view Peter. He's a mature, by the book guy and I don't see him being that kind of playful with Neal.

But, that said, I could be wrong. I'm very "what you see is what you get" when it comes to shows, so until we actually see Peter tease Neal by calling him an idiot or what have you, then it's something I have a bit of a hard time wrapping my mind around.