DEMON: Rrrah! You have discovered me! But do not try to defeat me, for I have been testing you and I know your weaknesses. Ha ha ha! (Buffy drukenly tries to kick it, misses, gets it the second time) Ooh! Oh!

(Buffy falls over, Spike helps her up)

BUFFY: I'm okay! I'm fine! Get off me!

DEMON: I am well struck! I call on the misty portal to my demon dimension, where I will lay my head and gently die. (throws smoke bomb)

BUFFY: He blew up. Did you see that?

SPIKE: Yeah, I saw. He's gone.

BUFFY: Gotta love it, you know. It makes you feel all powerful. Strong. Kinda sick.

written by: David Fury and Jane Espenson; transcribed by Joan the English Chick (pisces@englishchick.com). action descriptions shortened by me.. Full transcript at:
http://www.studiesinwords.de/105lifeserial.html