We have already seen Gotham City's charter stolen by the rottenest egg of them all, Egghead.

10 seconds sound clip from Batman (1966) - The Yegg Foes in Gotham (S2E14) TV Series.

You can hear this line at 00:00:08 in the Blu-ray version of the movie.

Quote context

[...]

- It will take a moment or two to warm up and then we shall see if my eggseptional logistics are correct.

- But even if I'm wrong about your being Batman, Mr. Wayne, your brain will be utterly destroyed.

- How diabolical! How inhuman! How eggscrutiating!

- Will the world's greatest criminal mind eggstract the true identity of Batman?

- The eggsplanation to these and other electric questions tomorrow!

- We have already seen Gotham City's charter stolen by the rottenest egg of them all, Egghead.

- Gordon and O'Hara with egg on their faces.

- Batman and Robin answer their weekly call.

- The city really owned by the Mohican Indians and only leased by the citizens. Nine pelts paid every five years to renew the lease or it will egg-xpire.

- Was this Eggheads plan? It was.

[...]