SARAH JANE: Doctor, you're being childish.

DOCTOR: Well of course I am. There's no point in being grown up if you can't be childish sometimes.

BRIGADIER: A few months ago, the superpowers, Russia, America and China, decided upon a plan to ensure peace. All three powers have hidden atomic missile sites. All three agreed to give details of those sites plus full operational instructions to another neutral country. In the event of trouble, that country could publish everyone's secrets and so cool things down. Well, naturally enough, the only country that could be trusted with such a role was Great Britain.

DOCTOR: Well, naturally, I mean, the rest were all foreigners.

BRIGADIER: Yes. You know, just once I'd like to meet an alien menace that wasn't immune to bullets.

SHORT: I do hope you'll include us in your article. We've been sadly misrepresented.

SARAH: Really? Well, we're covering a number of fringe organisations, and I'm sure we'll find a place for you. Somewhere between the flying saucer people and the flat Earthers.

DOCTOR: I tell you, Brigadier, there's nothing to worry about. The brontosaurus is large and placid.

DOCTOR: You may be a doctor, but I'm the Doctor. The definite article, you might say.

HARRY: Look here, Doctor. You're not fit

DOCTOR: Not fit? Not fit? Of course I'm fit. All systems go!

(The Doctor karate chops a handy brick in half then does some vigorous running on the spot.)

HARRY: I say.

(The Doctor starts skipping with the rope, forcing Harry to join in.)

DOCTOR: Mother, mother, I feel sick. Send for the doctor quick, quick, quick. Mother, dear, shall I die? Yes, my darling, by and by.