“Sticky tape!” The Doctor grins as he pulls a reel of what looks like some sort of duct tape from his coat pocket. “Never leave home without it; you never know when it’ll come in handy.”
“So what d’you plan on doing with it?” Martha can’t see how much good it’s going to do them when they’re in danger of suffocating as the air escapes from this little tin can in space.
“I’m going to patch the hole of course.”
It’s insane, it shouldn’t work, yet somehow it does. Only the Doctor could get away with sticking a spaceship together.