12 hats, 12 people.
4 seconds sound clip from Batman (1966) - Batman Stands Pat (S1E14) TV Series.
You can hear this line at 00:06:26 in the Blu-ray version of the movie.
Quote context
[...]
- The police department's on it's toes.
- Six, plus the five we know about make eleven.
- Your cowl's the 13th, that leaves....
- But why? What comes in twelve's?
- Donuts! Um, horse power. Um, amendments. Mile limits? Noon-midnight!
- Oh, that's not quite it. Twelve.
- A dozen?
- Shall we activate the bat computer?
- That sounds like a good idea. Feed it a question about dozens.
(Batman anti-crime computer processing)
- A dozen, a collection of 12 such as a dozen men or women.
- Or.... a dozen men and women! A jury, jurors!
[...]