Buffy: I want to share this with you. It’s like all these doors are opening to all these little worlds, and I can just walk right inside. 

Oz’s thoughts: No one else exists either. Buffy is all of us. We think. Therefore, she is.

Willow’s thoughts: She knows so much. She knows what Oz is thinking. I never know that. Before long, she’ll know him better than I do.

Buffy: No, don’t think that.

Willow: I can’t help it Buffy. I’m sorry, I just can’t. (leaves)

Oz: If you don’t need me, I’m gonna follow the redhead. (leaves)

Buffy: Guess I won’t be writing that book, ‘Gaining Friends through Telepathy.’ 

Cordelia: (in her head) Whatever. I wonder when I can go. (out loud) Whatever. Can I go?

Wesley: (sticks his head out of the office) Excuse me. Can you hear me thinking in here? I could go out into the hall. 

Buffy the Vampire Slayer — Season 3: Episode 18 — “Earshot”