As the ship lay in Boston Harbour, a party of the colonists, dressed as Red Indians, boarded the vessel, behaved very rudely, and threw all the tea overboard.
11 seconds sound clip from the Mary Poppins movie soundboard.
You can hear this line at 02:06:20 in the Blu-ray version of the movie.
Quote context
[...]
- Well, get on with it. Go on. Yes, Father.
- Yes, sir. Yes, I think I do.
- This made the tea unsuitable for drinking, even for Americans.
- Precisely. The loan was defaulted.
- Panic ensued within these walls.
- There was a run on the bank!
- From that time to this, sir, there has not been a run on this bank. Until today!
[...]