A most useful thing to have. When you have it.

6 seconds sound clip from Batman (1966) - Rats Like Cheese (S1E8) TV Series.

You can hear this line at 00:14:45 in the Blu-ray version of the movie.

Quote context

[...]

- Later, in the super refrigerated hideout of Mr. Freeze...

- Batman is gradually recovering after the cowardly attack behind his back.

- My utility belt.

- Is this what you're looking for?

- Very ingenious, this utility belt. Bat-rope, Bat-arang, explosives, gas pellets and other things. Such imagination.

- A most useful thing to have. When you have it.

- If I were you, Batman, I would not try to move from your nice heated area.

- It is not only foolish to go from a nice warm 76 degrees temperature to a 50 degree below zero temperature. It is also very dangerous to the system.

- You see, even through your glove, the cold air penetrates like a thousand needles. Am I not right? I am right.

- You're right, you cold fish.

[...]