Doctor: Rose, take Mickey and Arthur, get after it, follow it. Don’t approach it, just watch what it does.

Rose Tyler: Arthur?

Doctor: Good name for a horse.

Rose Tyler: No, you’re not keeping the horse.

Doctor: I let you keep Mickey. Now go, go, go!

From Doctor Who – Season 2 Episode 4: ‘The Girl in the Fireplace’ (2×04) | Produced by BBC