Xander: Okay, this is where I have a problem. See, because we're talking about vampires. We're having a talk with vampires in it.
Willow: Isn't that what we saw last night?
Buffy: No. No, those weren't vampires. Those were just guys in thundering need of a facial. Or maybe they had rabies. It could have been rabies. And that guy turning to dust? Just a trick of light. That's exactly what I said the first time I saw a vampire. Well, after I was done with the screaming part.