MEL: How could they? It's obscene.

DOCTOR: Not to a Vervoid.

MEL: You can't justify it. It's just-

DOCTOR: It's a matter of perspective, Mel. In your house in Pease Pottage, you had a large garden. What did you do with the plants and weeds you uprooted?

MEL: Put them on a compost heap.

DOCTOR: They're obeying instinct, like migrating birds or salmon swimming relentlessly upstream to spawn even though they may die. A compulsive following of the life cycle. Come on, Mel.

(The Doctor is stationary on the treadmill, winding his pocket watch. Lasky enters.)

LASKY: Why aren't you wearing a pulsometer? The heart should be monitored while exercising.

DOCTOR: Which heart would you suggest, madam? Unfortunately, that doesn't register a double pulse.

LASKY: A double pulse? What are you, a comedian?

DOCTOR: No, more a sort of clown, actually. Would you care to hear my rendering of “On With The Motley?”

(The Doctor runs through the corridors. Mel's towel waste bin is next in line for the pulveriser.)

DOCTOR: Stop!

(Just in time. The Doctor removes the lid and then the towel to reveal Mel. She begins to wake.)

DOCTOR: Don't throw the towel in, Mel.