[The Doctor] reached into his jacket pocket. Over the years, people had often commented on his ability to produce exactly the right item from his pockets at exactly the right time. Some had speculated that his pockets were extensions of the TARDIS, others had guessed he was just lucky. But then, they’d never read Yeltstrom’s Karma and Flares: The Importance of Fashion Sense to the Modern Zen Master.

They didn’t appreciate the things a sentient life-form could achieve, if he was totally at one with the lining of his jacket.

The Doctor pulled a sink plunger out of his pocket, thrust it into the mechanism in the wall, and twisted it a little.