David Mamet wrote the debate script

(Excerpted from actual transcript of the second presidential debate)

McCain: You know, my hero is a guy named Teddy Roosevelt. Teddy Roosevelt used to say walk softly -- talk softly, but carry a big stick. Sen. Obama likes to talk loudly.  In fact, he said he wants to announce that he's going to attack Pakistan. Remarkable.

Obama: Tom, just a...

Brokaw: Sen. McCain...

Obama: ... just a quick follow-up on this. I think...

McCain: If we're going to have follow-ups, then I will want follow-ups, as well.

Brokaw: No, I know. So but I think we get at it...

McCain: It'd be fine with me. It'd be fine with me.

Brokaw: ... if I can, with this question.

Obama: Then let's have one.

Brokaw: All right, let's have a follow-up.

McCain: It'd be fine with me.

Obama: Just -- just -- just a quick follow-up, because I think -- I think this is important.

Brokaw: I'm just the hired help here, so, I mean...

Obama: You're doing a great job, Tom.  

Look, I -- I want to be very clear about what I said. Nobody called for the invasion of Pakistan. Sen. McCain continues to repeat this.

What I said was the same thing that the audience here today heard me say, which is, if Pakistan is unable or unwilling to hunt down bin Laden and take him out, then we should.

Now, that I think has to be our policy, because they are threatening to kill more Americans.

Now, Sen. McCain suggests that somehow, you know, I'm green behind the ears and, you know, I'm just spouting off, and he's somber and responsible-

McCain: Thank you very much.

Obama: Sen. McCain, this is the guy who sang, "Bomb, bomb, bomb Iran," who called for the annihilation of North Korea. That I don't think is an example of "speaking softly."