We're referring to Chad and Jeremy.

4 seconds sound clip from Batman (1966) - The Bat's Kow Tow (S2E30) TV Series.

You can hear this line at 00:09:40 in the Blu-ray version of the movie.

Quote context

[...]

- The sneeze bomb ought to keep you busy for a while.

- Ah. Batman and Robin. Ah, welcome to my humble office. I am Sir Sterling Habits. How do you do? And how do you do? Heh.

- And what brings you here at such an early hour of the morning?

- By this time, you're aware of the serious tragedy affecting your country's most popular export.

- Have we stopped making those small sports cars?

- We're referring to Chad and Jeremy.

- Oh, yes, those blighters. Hm. Can't understand a word they say.

- Why can't the English learn to speak?

- Have you consulted your government about the ransom demands?

- Oh, yes, indeed. Parliament has been overtime on it.

[...]