Very well then, ask yourselves what is wrong with this sentence?

7 seconds sound clip from Batman (1966) - Batman Is Riled (S1E6) TV Series.

You can hear this line at 00:09:19 in the Blu-ray version of the movie.

Quote context

[...]

- It involves a belt, but there's going to be a switch.

- A switch.

- An electric switch?

- Wrong, panel! A switch, but not electric.

- As you doubtless know, every wrong answer means that we contribute one dollar to the famous Joker's Home For Worn Out Bats

- Hey, Joker. Cop cars on the street.

- Let's chase it.

- Fatman and Boy Blunder... Are your blindfolds in place?

- Very well then, ask yourselves what is wrong with this sentence?

- He who laughs last, laughs good.

- Holy grammar! Is that all?

- He who laughs last, laughs best, not good. Best. Best! Best!

- Do you suppose blindfold might have something to do with it?

[...]