Aired version (source):
(Giles is back to human form, but has been forced to borrow clothing from Ethan. Not his style.)
BUFFY: You okay?
GILES: (sheepishly) Oh, um, uh, embarrassed, mostly. Ethan's wardrobe's not helping any. Uh, how did you know it was me?
BUFFY: Your eyes. You're the only person in the world that can looked *that* annoyed with me.
Original version. (Source.)
(crossing to Giles)
Giles? You okay?
Embarrassed mostly. Buffy, I don't
know what to say. You know I'd
I know. And I'm so sorry about,
you know, stabbing you in the heart...
How, how did you know it was me?
Your eyes. There's only one
person in the world who can look
that annoyed with me.