Speaking of afternoons, the joke goes like this:
4 seconds sound clip from the Mary Poppins movie soundboard.
You can hear this line at 01:18:59 in the Blu-ray version of the movie.
Quote context
[...]
- Bit late tonight, aren't you, Banks?
- I say, Banks! Is anything the matter, Banks? Banks!
- Oh, Father, we're so glad you're home!
- We had the most wonderful afternoon with Mary Poppins.
- Speaking of afternoons, the joke goes like this:
- I know a man with a wooden leg named Smith.
- Smith? We don't know anyone called Smith.
- And there was a second chap, and the second chap says, what's the name of his other leg?
- And we had a lovely tea party on the ceiling!
- Oh, children, please be quiet.
[...]