[to the trio after they are turned visible]
Buffy: So you three have, what... banded together to be pains in my ass?
Warren Meers: We're your "arch-nemesises-ses".

Xander: [Buffy is invisible] Sorry! Her clothes are, uh, invisible, too. Buffy, how did this hap- wait a sec, have you been feeling ignored lately?
Buffy: Yeah, ignored. I wish. No, this isn't a Marcie deal. I don't know what happened. I left Main Street after getting my hair cut, and was...
Anya: You cut your hair?
Buffy: Oh, yeah!
Anya: Really? How short?
Buffy: Um, about up to here. Well-well, if you could see my hand, it's kind of above my shoulders.
Anya: Ahh, that sounds so adorable! I was thinking about getting my hair cut before the wedding...
Xander: Can we get back to freaking out about no-show Buffy? This is serious.

Buffy: [Buffy is invisible] Willow's still a wreck, Dawn's mad at both of us, and the social services lady put me through a wringer. Says she's gonna watch me. I'd like to see her try now.

Xander: Good Godfrey Cambridge, Spike! You still trying to mack on Buffy? Wake up already. Never gonna happen. Only a complete loser would ever hook up with you. Well, unless she's a simpleton like Harmony or a - or a nut sack like Drusilla...

Spike: Buffy's a great mom. She takes good care of her little sis, like, um, when Dawn was hanging out too much in my crypt, Buffy put a right stop to it.
Doris Kroger: I'm sorry, did you say...
Buffy: Crib. Crib. He said crib. You know kids today and their buggin' street slang.

[Social worker finds suspicious bag]
Buffy: You know, I know what that looks like, but I-I swear it's not what it looks like. It's magic weed. It's not mine.

Jonathan Levinson: [Warren almost hits Jonathon with an invisibility gun] You penis!
Warren Meers: Oh, cheer up, Frodo. Because, thanks to my brains and our mystical gem we got ourselves an invisibility ray. And I'd say that makes us pretty much unstoppable.

Doris Kroeger: There was a voice, before. It made my coffee dance. It told me to...
Manager: To what?
Doris Kroeger: Nothing.
Manager: Doris, take the rest of the day off. See your doctor.
Doris Kroeger: W-What about my cases?
Manager: We'll, uh, put someone else on them, and have them redo the Summers' interview.
Doris Kroeger: I'm not crazy. I am not crazy!

[about the invisibility gun]
Andrew Wells: I pictured something cooler. More ILM, less Ed Wood.

Jonathan Levinson: We got a lot bigger problems here, bonehead. The Slayer's invisible, now. Andrew Wells: He's right. She could be anywhere. Even here, right now, watching, listening to every word we say. For all we know, she could be one of us.
[all stare at each other suspiciously]
Warren Meers: [snaps out of it] Oh!
Andrew Wells: Oh, wait, no guys. That isn't true.

Jonathan Levinson: We're not killers, we're crime lords!
Andrew Wells: Yeah! Like-like Lex Luthor. He's always trying to take over Metropolis, but he doesn't kill Superman!
Warren Meers: Because it's Superman's book, you moron!
Andrew Wells: But Lex doesn't kill him, does he?

Xander: [as Xander walks in on Spike and invisible Buffy] Spike? What are you doing?
Spike: What am I-... What does it look like I'm doing, you nit? I'm exercising, aren't I?
[starts doing "push-ups"]
Xander: Exercising? Naked? In bed?
Spike: A man shouldn't use immortality as an excuse to let himself go. You gotta be fit for killin'...
Xander: Ya-huh.
(Taken from IMDB)