Quote Meme

When you see this, quote from Doctor Who.

I've done this meme already last year, using my very favourite Old School quote (from Survival, naturally), so this year's reply is New Who. Three guesses as to what it will be about.

From The Sontaran Strategem:

DONNA
I've been thinking. I'm sorry, I'm going home.

DOCTOR (disappointed)
Well, if that's what you want. I mean it's a bit soon... I had so many places I had wanted to take you. The Fifteenth Broken Moon of the Medusa Cascade, the Lightning Skies of Cotter Palluni's World, Diamond Coral Reefs of Kataa Flo Ko... Thank you. Thank you, Donna Noble, it's been brilliant. You've... you've saved my life in so many ways. You're... (comprehension dawning on his face) You're just popping home for a visit, that's what you mean.

DONNA
You dumbo!

DOCTOR
And then you're coming back.

DONNA
Know what you are? A great big outer-space dunce.

DOCTOR
Yeah.

ROSS
Ready when you are, sir.

DONNA
What's more you can give me a lift. Come on!

They climb in to the Jeep.

DONNA
Broken moon of what?

DOCTOR
I know, I know.