Then we'll wait.
3 seconds sound clip from the A King in New York (1957) movie soundboard.
You can hear this line at 01:17:00 in the Blu-ray version of the movie.
Quote context
[...]
- I believe I'm addressing the King's nephew, am I not?
- Yes.
- I thought so. That's what I just heard.
- The King's nephew. Well, indeed! This is an unexpected pleasure.
- Have you any idea, Sir, when His Majesty will return?
- He said he was just going to the bank to get some plans.
- I'll leave you gentlemen with His Royal Highness.
- Your Highness, is this your first visit to our country?
- Oh no, I've been here a long time. Practically all my life.
- Sounds like a real American boy, don't he?
[...]