Honestly, those two are so busy. I'll wager Batman and Robin don't get around as much as Bruce and Dick.

12 seconds sound clip from Batman (1966) - An Egg Grows in Gotham (S2E13) TV Series.

You can hear this line at 00:03:46 in the Blu-ray version of the movie.

Quote context

[...]

- I had to buy a whole raccoon coat from a very popular crooner of the 1920s who'd fallen on hard times.

- Had to pay a pretty price for it too.

- This one's held up very well for a raccoon.

- A matter of grave importance has arisen. Your attention would be appreciated. A contract to be, ahem, read.

- I will take care of it immediately, Alfred.

- I'll go with you, Bruce.

- Honestly, those two are so busy. I'll wager Batman and Robin don't get around as much as Bruce and Dick.

- I rather doubt that, madam.

- Yes, commissioner.

- Dire news, Batman. Egghead is back with a carton full of crime.

- We'll be right there. To the Batpoles.

- Why go to all that trouble to steal the city charter?

[...]