Buffy the Vampire Slayer, Season 5

[Giles and Buffy tour the magic shop Giles is about to buy]

Buffy:
Giles, are you sure about this?

Giles:
Why wouldn't I be?

Buffy:
Well, aside from the fact that most magic shop owners in Sunnydale have the life expectancy of a Spinal Tap drummer... and have you ever run a store before?

Giles:
I was a librarian for years. This is exactly the same, except people pay for the things they don't return. It'll give me focus, increase my resources. And it'll prevent you lot from trampling all over my flat at all hours. There may even be some space for you to train in the back.

Buffy:
Boy, you've really thought this through... How bored were you last year?

Giles:
I watched "Passions" with Spike. Let us never speak of it.

[Buffy breaks out laughing as she follows Giles into a back room]