Ford Prefect: (turns into a penguin, as Arthur's leg drifts off into the sunset) Hey. Quack. Who are you? Where are you? What's going on? Quack. Is there any way of stopping it?
Trillian: Please relax. You are perfectly safe.
Ford Prefect: That is not the point. Quack. The point is, I am now a perfectly safe penguin, and my colleague here is rapidly running out of limbs.