Anya: I don't understand. I'm pretty, I'm young. Why didn't you take advantage of me? Is there something wrong with your body?
Xander: There's nothing wrong with my body.
Anya: Well, there must be. I saw that wrinkled man on TV talking about erectile dysfunction...
Xander: Whoa! Hey! All systems go, here. No function problem, okay? You want sex? Let's have sex. Right here. Hot, sweaty, big sex!