The Doctor: The next word is kind of the scary word. Take a moment. Get yourself in a calm place. (takes her hands) Go “omm”.
The Doctor: It’s a tongue.
Amy: A tongue?
The Doctor: (excited) A tongue! A great big tongue!
Amy: (stunned) This is a mouth? This whole place is a mouth? We’re in a mouth?!
The Doctor: Yes, yes, yes, but on the plus side, roomy.
Doctor Who - 5.2 - The Beast Below