Buffy, it's like we're sisters, with really different hair.

Reptile Boy

Xander, Willow and Buffy watching a foreign movie on TV:
Xander: Is she dying?
Buffy: I think she's singing.
Xander: To a telephone in Hindi. Now that's entertainment! Why is she singing?
Willow: She's sad because her lover gave her twelve gold coins, but then the wizard cut open the bag of salt, and now the dancing minions have nowhere to put their big maypole... fish thing.
Xander: Uh-huh. Why is she singing?
Buffy: Her lover? I thought that was her chiropractor.
Willow: Because of that thing he did with her feet? No, that was personal.
Xander: Hmm. And we thought just because we didn't have any money or anyplace to go this would be a lackluster evening.
Willow: I know! We could go to the Bronze and sneak in our own tea bags and ask for hot water.
Xander: Hop off the outlaw train, Will, before you land us all in jail.

Willow: You dreamed about Angel again?
Buffy: Third night in a row.
Willow: What did he do in the dream?
Buffy: Stuff.
Willow: Oh! Stuff! Was it one of those vivid dreams where you could feel his lips and smell his hair?
Buffy: It had Surround Sound. I'm just thinking about him so much lately.
Willow: You two are so right for each other. Except for the, uh...
Buffy: Vampire thing.
Willow: That doesn't make him a bad person. Necessarily.
Buffy: I'm brainsick. I can't have a relationship with him.
Willow: Not during the day, but you could ask him for coffee some night. It's the non-relationship drink of choice. It's not a date, it's a caffeinated beverage. Okay, sure, it's hot and bitter like a relationship that way, but...

Xander: So, Cor, you're datin' college guys now.
Cordelia: Well, not that it's any of your business, but I happen to be dating a Delta Zeta Kappa.
Xander: Oh! An extra-terrestrial. So that's how you get a date after you exhausted all the human guys.
Cordelia: You'll go to college someday, Xander. I just know your pizza delivery career will take you so many exciting places.

Giles: Just because the paranormal is more normal and less... para of late is no excuse for tardiness or letting your guard down.
Buffy: I haven't let my guard down.
Giles: Oh, really? You yawned your way through weapons training last week, you skipped hand-to-hand entirely... Are you gonna be prepared if a demon springs up behind you and does this?
(He tries to get her from behind, but she grabs his arm.)
Giles: Yeah, well, I'm not a demon, which is why you should let go now. Thank you.

Buffy: Digging on the undead doesn't exactly do wonders for your social life.
Giles: That's exactly where, where being... different comes in handy.
Buffy: Right! Who needs a social life when you've got your very own Hellmouth?
Giles: Yes! You have a duty, a purpose, you have a commitment in life. Now how many people your age can say that?
Buffy: We talking foreign or domestic? How about none?

Richard: Hi, sweetheart. I'm Richard. And you are?
Buffy: So not interested.

Richard: What, she likes to play hard to get?
Tom: No, Richard. I think you're playing easy to resist.

Angel: You're sixteen years old. I'm two hundred and forty-one.
Buffy: I've done the math.

Angel: This isn't some fairy tale. When I kiss you, you don't wake up from a deep sleep and live happily ever after.
Buffy: No. When you kiss me I wanna die.

Cordelia: Buffy! Did you lose weight? And your hair... All right, I respect you too much to be dishonest. The hair's a little... Well, that really isn't the point here, is it? The Zeta Kappas have to have a certain balance at their party, and Richard explained it all to me, but I was so busy really listening that I didn't hear much. Anyway, the deal is they need you to go. And if you don't go, I can't. And I'm talking about Richard Anderson, okay? As in Anderson Farms, Anderson Aeronautics and Anderson Cosmetics. Well, you see why I have to go. Buffy, these men are rich. And I am not being shallow. Think of all the poor people I could help with all my money!
Buffy: I'll go.
Cordelia: You'll go? Great! I'll drive. Oh, Buffy, it's like we're sisters! With really different hair.

Buffy: Look, I wasn't lying. I was just... protecting him from information that he wouldn't be able to... digest properly.
Xander: Like a corn dog.
Willow: Like you don't have a sick mother, but you'd rather go to a frat party where there's gonna be drinking and older guys and probably an orgy.
Xander: Whoa! Whoa-ho-ho, rewind. Since when do they have orgies, and why aren't I on the mailing list?
Buffy: There's no orgies!
Willow: I heard a lot of wild things go on at frat parties.
Buffy: Okay, you know what? Look, seven days a week I am busy saving the world. Once in a great while I wanna have some fun.

Willow: I can't believe she lied to Giles. My world is all askew.
Xander: Buffy's lying, Buffy's going to frat parties... That's not askew, that's cockeyed.
Willow: Askew means cockeyed.
Xander: Oh.

Cordelia: You know what's so cool about college? The diversity. You've got all the rich people, and all the other people.

Tom: No. We're not all a bunch of drunken louts. Some of us are sober louts.

Giles: She lied to me?
Willow: Well...
Angel: Did... she have a date?
Willow: Well... Well, why do you think she went to that party? Because you gave her the brush-off! (to Giles) And you never let her do anything except work and patrol! And I know she's the Chosen One, but you're killing her with the pressure! I mean, she's sixteen going on forty! (to Angel) And you! I mean, you're gonna live forever! You don't have time for a cup of coffee?!

Xander, punching a guy: That's for the wig! That's for the bra! That's for the makeup! And that's for the last sixteen and a half years!

Cordelia: You did it! You saved us! I've never been so happy to see anyone in my whole... You guys. I just... hate you guys! The weirdest things always happen when you're around!

Buffy: I told one lie, I had one drink.
Giles: Yes, and you were very nearly devoured by a giant demon snake. The words "Let that be a lesson" are a tad redundant at this juncture.

Xander: Hmm. Starve a snake, lose a fortune. Boy, I guess the rich really are different, huh?