Take it easy... Robin.

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

You can hear this line at 00:23:41 in the Blu-ray version of the movie.

Quote context

[...]

- Comfortable? Huh.

- These driveshafts rotate 1000 revolutions per second, that means the centrifugal force will tear the bones from your body.

- But before I start you spinning, I'd like to spill off one last riddle. You might have about a minute to solve it before you die.

- Now, then. Why is a woman in love like a welder?

- Goodbye, Boy Wonder.

- Take it easy... Robin.

- One bad turn deserves another.

- Batman and Robin to die?

- Things certainly are turning the wrong way for them. Is this really the end? Unbelievable!

- If you care for Batman and Robin, keep hoping 'til tomorrow night. Same time. Same Bat-channel.

[...]