Buffy: I think it’s good to be reliable. 

Willow: Well, maybe I don’t wanna be reliable all the time. Maybe I’m not just some doormat person. Homework Gal. 

Xander: I’m thinking nerve strike. 

Willow: Maybe I’ll change my look! Or cut class. You don’t know. And I’m eating this banana. Lunchtime be damned!

(Willow storms off, Buffy follows)

Buffy: Will, wait. I’m really sorry… 

Willow: Buff, I’m storming off. It doesn’t really work if you come with me. 

Buffy: Oh.

Buffy the Vampire Slayer — Season 3: Episode 16 — “Dopplegangland”