An umbrella usually means the Penguin's waddling around somewhere.

5 seconds sound clip from Batman (1966) - The Cat's Meow (S2E29) TV Series.

You can hear this line at 00:01:42 in the Blu-ray version of the movie.

Quote context

[...]

- Friends, the rainy season is almost upon us and if you ever get caught in the downpour, just reach for a Stay-Dry Umbrella.

- Stay-Dry has been making umbrellas for 64 years now.

- I know that it's supposed to be bad luck to open an umbrella indoors, but I'll take that chance because I would like you to see the beautiful workmanship that goes into this Stay-Dry Umbrella. Please note the...

- Looks like Harry Upps has lost his voice.

- This may be the work of one of our archenemies.

- But which one?

- An umbrella usually means the Penguin's waddling around somewhere.

- And this is a riddle: What's black and white and full of fuzz?

- Zebra, zebra, zebra?

- No, a squad car.

- Yes, speaking of squad cars, Commissioner Gordon always watches this program. He should be calling us any second.

- Are we on the air?

- Due to circumstances beyond anyone's control, we now switch you to our midday movie: The Big Green Thing That Devoured Pittsburgh.

[...]