Yeah, what makes you so sure?

4 seconds sound clip from Batman (1966) - True or False Face (S1E17) TV Series.

You can hear this line at 00:11:30 in the Blu-ray version of the movie.

Quote context

[...]

- Batman and Robin. Come to make a deposit?

- No, we've come to prevent a withdrawal. By False Face.

- What? False Face, notorious criminal? Master of disguise?

- We better load the money in the truck before it's too late, old buddy.

- It's already too late.

- False Face!

- What?

- Right, that's False Face himself in disguised person.

- Yeah, what makes you so sure?

- It's obvious. Only a criminal would disguise himself as a licensed bonded guard, yet callously park in front of a fire hydrant.

- It's always the little things.

- This time it'll cost you a big penalty, False Face. We're going to withdraw you from circulation and deposit you in jail.

- Well, Boy Wonder, you're interest is over due.

[...]