- How'd it go, chief?
- Magnificent. Sumptuous.

6 seconds sound clip from Batman (1966) - A Riddle a Day Keeps the Riddler Away (S1E11) TV Series.

You can hear this line at 00:12:38 in the Blu-ray version of the movie.

Quote context

[...]

- Oh! I must be getting lazy.

- Meanwhile, in another cave, a rat cav, dreary hideout of the sinister River Rats Gang currently in the employ of The Riddler.

- What's this, River Rats? Munching cheese while there's work to be done?

- Sorry, Riddler, but we got hungry.

- Oh, indeed.

- Well, perhaps you'll lose your appetite when I deduct the cheese bill from your share of the profits.

- How'd it go, chief?

- Magnificent. Sumptuous.

- You should have seen the look on Batman's face when I threw the tiara.

- Now, my good rats. Now is the time to go to the Royal Mushroom Club.

- If Plan 13-Z goes well, and I'm sure it will, the finest achievement in crime shall be culminated tonight.

- The end of Batman and Robin.

[...]