“I’ve got an iron will” is a Chuck Noblet line.

Stephen: “Compulsion”? That’s absurd. Of course I can resist. I’ve got an iron will. I…

Jon: And that’s the last of it.

Stephen: …Jon? If you get near my teeth right now, I will kill you. Just so you know.

Seras: That won’t happen.

Jon: She’s right. Once you’ve had enough for this bond to kick in, I can just, uh, order you to stop, and you’ll be compelled to do that instead. Should I just give you my wrist, or…or…

Jon (thinking): …oh, what the hell. May as well make this one special.