Niles: All right, now Daphne, try and remain calm.
Daphne: Well, we'll just have to wait for the night watchman. He checks all these doors when he does his rounds in a few hours.
Niles: [hyperventilating] For the last time, Daphne, I told you not to panic. And please don't make me say it again, I have to conserve oxygen!
[He closes one nostril with his finger]