[Uncle Albert had been asked if there is a way to get down from being up in the air]
Uncle Albert: There is a way. And frankly, I don't like to think of it, because you have to think of something sad.
Mary Poppins: Then do get on with it, please.
Uncle Albert: Let me see... I have the very thing: Yesterday, when the lady next door answered the door, there was a man there, and the man said to the lady, "I'm terribly sorry, I just ran over your cat."
[Jane and Michael descend from being up in the air]
Jane: Oh, that is sad.
Michael: The poor cat.
Uncle Albert: And the man said, "I'd like to replace your cat." And the lady said, "That's all right with me, but how are you with catching mice?"
[then they all burst out laughing and Jane and Michael re-ascend back to the tea table in the air]