Red Dwarf s7 e 4 Duct Soup

Kristine Kochanski (Chloë Annett) is having a hard time on Starbug with no bath, poor food, and squeaking pipes in her sleeping quarters. Dave Lister (Craig Charles) arranges for her to have a bath in his quarters, and finds some extra clothing for her—gestures that worry Kryten (Robert Llewellyn) considerably. But before she can bathe, an engine failure leaves the crew trapped in Lister's quarters, and the ship is on a collision course with a meteor shower. The only way to re-fire the backup generator is by going through the service ducts.

As they navigate through the narrow ducts, Kochanski helps Lister with his claustrophobia, while Kryten and Cat (Danny John-Jules) look for any hatches that they can use to get back into Starbug. After dealing with water flushing through the vents, and hurricane-force winds to dry the ductways, Kryten admits that he planned the whole situation. He adjusted the thermosettings so it would overload and locked them in Lister's quarters. They eventually exit the ducts but end up back in Lister's quarters. Kryten makes another admission—the doors to Lister's quarters aren't locked after all; he excluded them from the shutdown override in case anything happened. Lister goes off to steer the ship away from disaster, while Kochanski asks Kryten to repeat the squeak noises that the pipes make while repeatedly hitting his head with a spanner (which she had been doing earlier to the squeaking pipes).