Ed: Any zombies out there?
Shaun: Don't say that!
Ed: What?
Shaun: That!
Ed: What?
Shaun: The zed-word. Don't say it!
Ed: Why not?
Shaun: Because it's ridiculous!
Ed: All right... are there any out there, though?
[looking out of the letter-box, he sees an empty street]
Shaun: I can't see any. Maybe it's not as bad as all that.
[he turns his head and sees a pack of zombies]
Shaun: Oh, no, there they are.