Willow: "Yeah, you're the Slayer. We're, like, the Slayerettes."

Buffy: "Can a vampire ever be a good person? Couldn't it happen?"

Buffy: "I'm not just some crazy person. I'm the Slayer"

Buffy: "I'm sixteen years old. I don't want to die."

Buffy: "I may be dead, but I'm still pretty. Which is more than I can say for you."

Willow: I mean, why else would she be acting like such a B-I-T-C-H?

Giles: Willow, I think we are all a little too old to be spelling things out.

Xander: A bitca?

• "When She Was Bad"

Angel: "I know what you're thinking, but don't worry, I don't bite."

Xander: "Bad thing? I was naked. Bad thing doesn't cover it."

Cordelia: "This is all about me! Me, me, me!"

(on hanging a grimacing tribal mask)
Joyce: "I thought it could cheer the room."
Buffy: "It's angry at the room, mom, it wants the room to suffer."

Giles: "Don't taunt the fear demon!"
Xander: "Why? Can it hurt me?"
Giles: "No...it's just tacky."

"What's it going to take to strike a spark?

These endless days
are finally ending in a blaze
and we are caught in the fire
the point of no return
and we will walk though the fire
and let it burn." (it's not the quote but the whole song)

Buffy to Spike in "Lovers Walk"

"I violently dislike you".

This was my signature back in IMDb boards. This reference to both her Slayer insticts and her dislike over Spike.

Buffy: If the Apocalypse comes, at least I won't have to take my chemistry exams. Or maybe I'll be taking them forever.

LATER:

Vampire-Harmony (during a fight) Oww, that hurt. I am SO going to bite you.

To this day, when tired, my husband will utter, "Trees good, fire bad"

Buffy:   "Mom, I'm a Vampire Slayer."

Willow:   "I don't want danger. Big 'NO' to danger"

Xander:   "Are we overlooking the possibility that she may be very attracted to me? She's possessed."

Buffy:   "Come on, you've been dating for what, like 200 years? You don't know what a girl means when she says maybe she'll show"

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"

Willow:   "Okay. No biting, though"

Spike:   "Fe, fi, fo, fum. I smell the blood of a nice ripe girl."

Angel:   "To kill this girl, you have to love her."

"I've got a theory. It could be bunnies!"

Giles: You'll do what, lick me to death?

When Spike wants the TV on so he can watch Passions.

Professor Walsh. That simple little recon you sent me on wasn't a raccoon. Turns out it was me trapped in the sewers with a faulty weapon and two of your pet demons. If you think that's enough to kill me, you really don't know what a Slayer is. Trust me when I say you're gonna find out. Buffy The I in Team

*Spike: * Is this bird after you?

*Xander: * In a bad way, yeah.

*Spike: * Tell you what I'll do, then. I'll head out, find this girl, tell her exactly where all of you are, and then watch as she kills you. Can any one of your damn little Scooby club at least try to remember that I HATE you all? Just because I can't do the damage myself doesn't stop me from aiming a loose cannon your way. And here I thought the evening would be dull.

*Xander: * Go ahead! You wouldn't even recognize her!

Spike: Dark hair, this tall, name of Faith. Criminally insane. I like this girl already.

*Xander: * We're dumb.

This Year's Girl

(From season 5) Buffy: What are you doing here? Answer me in 5 words or less. Spike: Going -- for -- a --- walk -- B***H

The First: You think you can fight me? I'm not a demon, little girl, I am something you cannot even conceive. The First Evil. Beyond sin. Beyond death. I am the thing the darkness fears. You’ll never see me, but I am everywhere. Every being, every thought, every drop of hate.

Buffy: All right, I get it, you're evil! Do we have to chat about it all day?

AMENDS

Buffy Bot: That'll put marzipan in your pie plate, bingo!

Buffy to Xander: "I am not having sex with Spike! But I'm starting to think you might be."