Bert: Speaking of names, I know a man with a wooden leg named Smith.
Uncle Albert: What's the name of his other leg?
George Banks: Kindly do not attempt to cloud the issue with facts.
Mary Poppins: We can't have them gallivanting up there like kangaroos, can we?
Mrs. Banks: I'll try to do better next time.
Mr. Banks: Next time? My dear, you've engaged six nannies in the last four months. And they've all been unqualified disasters.
George Banks: I suggest you have this piano repaired. When I sit down to an instrument, I like to have it in tune.
Mrs. Banks: But, George, you don't play.
George Banks: Madam, that is entirely beside the point!
Mary Poppins: Supercalifragilisticexpialidocious.
Mary Poppins: I beg your pardon, are you ill?
George Banks: I hope not.
Mr. Banks: Just a moment, Mary Poppins. What is the meaning of this outrage?
Mary Poppins: I beg your pardon?
Mr. Banks: Will you be good enough to explain all this?
Mary Poppins: First of all, I would like to make one thing quite clear.
Mr. Banks: Yes?
Mary Poppins: I never explain anything.
Mrs. Banks: As a matter of fact, since you hired Mary Poppins, the most extraordinary things seem to have come over the household.
Mr. Banks: Is that so?
Mrs. Banks: Take Ellen, for instance. She hasn't broken a dish all morning.
Mr. Banks: Really. Well, that is extraordinary.
Mrs. Banks: But you're always saying that you wanted a cheerful and pleasant household.
Mr. Banks: Winifred, I should like to make a slight differentiation between the word cheerful and just plain giddy irresponsibility.
Mary Poppins: Our first game is called Well Begun is Half-Done.
Michael: I don't like the sound of that.
Mary Poppins: Otherwise titled Let's Tidy up the Nursery.
Michael: I told you she was tricky.
Mrs. Banks: I'm sorry, dear, but when I chose Katie Nana, I thought she would be firm with the children. She looked so solemn and cross.
George Banks: My dear, never confuse efficiency with a liver complaint.
Chosen answer: They recorded her singing in two separate parts and fixed them together. The editors did a good job on it! It may have been made a long time ago but even then the technology was quite advanced enough to carry out that scene.