Here's one I picked up in a dance hall.
4 seconds sound clip from the Duck Soup (1933) movie soundboard.
You can hear this line at 00:09:30.987 in the Blu-ray version of the movie.
Quote context
[...]
- I want you to meet a very charming lady.
- Just a moment. I want to present Miss Vera Marcal.
- Oh, you don't understand. This is Vera Marcal, the famous dancer.
- Is that so? Can you do this one?
- I danced before Napoleon. No, Napoleon danced before me. In fact, he danced 200 years before me.
- Here's one I picked up in a dance hall.
- Here's another one I picked up in a dance hall.
- Perhaps sometime we get a chance to dance together, huh?
- Good heavens, Your Excellency!
[...]