Okay, boss.
4 seconds sound clip from the Batman (1966) TV series - Fine Feathered Finks (S1E3).
You can hear this line at 00:12:53 in the Blu-ray version of the episode.
Quote context
[...]
- This is the most fantastic gimmick in my whole criminal career. Yeah.
- Hmm, now, I wonder what time it is.
- At the signal the time will be precisely 11:56.
- Now, Hawkeye, give the go ahead to swoop at the bank.
- Maybe, I'm dumb, Penguin, but I don't dig this caper.
- Oh, it's very simple, my little gosling.
- I'm going to unleash the most bizarre, senseless barrage of umbrellas onto Gotham City.
[...]