Buffy the Vampire Slayer, Season 4

Spike:
You know why I really hate you, Summers?

Faith:
[in Buffy's body] 'Cause I'm a stuck-up tight-ass with no sense of fun?

Spike:
Well, yeah. That covers a lot of it.

Faith:
[in Buffy's body] 'Cause I could do anything I want and instead I choose to pout and whine and feel the burden of Slayerness. I mean, I could be rich, I could be famous. I could have anything. Anyone. Even you, Spike. I could ride you at a gallop until your legs buckled and your eyes rolled up. I've got muscles you've never even dreamed of. I could squeeze you until you pop like warm champagne and you'd beg me to hurt you just a little bit more. And you know why I don't? [mockingly] Because it's wrong.

Spike:
I get this chip out, you and me are going to have a confrontation.