What do you mean, Aunt Harriet?
3 seconds sound clip from Batman (1966) - A Riddle a Day Keeps the Riddler Away (S1E11) TV Series.
You can hear this line at 00:03:16 in the Blu-ray version of the movie.
Quote context
[...]
- You think? That's mate... old chum.
- Gosh, why can't I ever beat you?
- You have on... several occasions.
- Only when your mind is on important matters...
- Excuse me for interrupting, sir. But it's the Batphone.
- Oh, boy!
- Oops! Sorry, Aunt Harriet. I didn't mean to scare you.
- Mercy alive! If I didn't know you two better, I'd think you were up to something.
- What do you mean, Aunt Harriet?
- Batman, I'm having trouble... With a riddle.
- We'll be right over. To the Batpoles.
- It's The Riddler. His modus operandi alright.
[...]