- You mean, you ain't?
- No! I'm not.

3 seconds sound clip from Batman (1966) - The Penguin Goes Straight (S1E21) sitcom.

You can hear this line at 00:13:41.599 in the Blu-ray version of the TV Series episode.

Quote context

[...]

- Confidence. That's is what I'm stealing from these dupes. Confidence and pride in The Penguin. And they'll end up handing me their treasure on a silver plate.

- Yeah, but I wonder...

- You wonder, what?

- Don't get mad at me Penguin. I wonder what Batman and Robin's gonna say about that.

- Piddling pair will be punctured! Now and forever.

- Then, no offence, but we heard you sing that song before.

- Yeah, and it's always us who end up singing the anvil chorus in the pen.

- Not this time, you see. I have planted a seed in their mind. I've planted the erroneous idea that I'm going to steal the jewels of Sophia Starr.

- You mean, you ain't?

- No! I'm not.

- I delight in the devious, I obviate the obvious. They're misreading my intentions.

- They're going to lay a trap for me. A trap which when it springs...

- And Batman and Robin will never come back, Batman and Robin will never...

- Well, farewell, my fine fostered fates. Your mind has tore.

[...]