We're gonna hatch the Batman a certain surprise.
6 seconds sound clip from Batman (1966) - The Penguin's a Jinx (S1E4) TV Series.
You can hear this line at 00:10:08 in the Blu-ray version of the movie.
Quote context
[...]
- Gosh, yes! He's got all that equipment readymade in his criminals storeroom.
- It's a fiendish, well-laid scheme.
- Right
- What'll we do? Tip off Commissioner Gordon?
- No, not on your life, old man.
- The Penguin and I have a score to settle. We'll put the salt on his tail ourselves.
- To the Pelican Arms, my fine feathered finks.
- We're gonna hatch the Batman a certain surprise.
- Charming, Ms. Robbins. Delightful Just the thing for Funboy magazine
- Now if you could just curl up a trifle more, hmm?
- Ah, well, one never knows what lurks around life's corner, Ms. Robbins.
[...]