- You know what happens to bad little boys who tell stories?
- Certainly. They marry the beautiful princess. So long.

7 seconds sound clip from the The Cocoanuts (1929) movie soundboard.

You can hear this line at 00:13:49.528 in the DVD version of the movie.

Quote context

[...]

- Hello. How do you do, Miss Potter?

- Hello.

- Your mother is looking for you, Polly.

- She generally is, and she generally finds me. You know Mother.

- Thanks a lot. It was a lovely story, Mr. Adams. I'd like to hear the rest of it sometime. Good-bye.

- I wonder if I could hear it sometime.

- With pleasure.

- How about you, Yates?

- No, thanks.

- You know what happens to bad little boys who tell stories?

- Certainly. They marry the beautiful princess. So long.

- And I'll be there with you when my dreams come true. (3)

- Nice boy. The kind who usually gets what he wants.

- Not always. I might win out yet.

- Well, miracles do happen.

[...]