Boy Blunder.

4 seconds sound clip from Batman (1966) - The Bat's Kow Tow (S2E30) TV Series.

You can hear this line at 00:21:52 in the Blu-ray version of the movie.

Quote context

[...]

- Batman, when I get out of jail, will you take me on a date?

- Well, I have plenty of time to think about that, Catwoman. Several years, I'm afraid.

- If I were to kiss you, would you think I was a bad girl?

- But, uh... No. No, of course not, Catwoman.

- Kissing is one of the most natural things in the world. Uh, some people kiss almost every day, I'm told.

- Well...

- Come on, Batman. The police are here.

- Boy Blunder.

- Catwoman, may I take a rain check on that kiss?

- Certainly, Batman. Anytime.

- Holy mush.

- Went up to my boss today, I said, hey, man, can I have more pay? I said, will, you, please, sir? He took one look at me and then he said, if you ask me that again I'll kill you.

[...]