Boys and girls, go back to your studies. Believe me, nothing in life is free!
7 seconds sound clip from Batman (1966) - The Joker Goes to School (S1E15) TV Series.
You can hear this line at 00:14:38 in the Blu-ray version of the movie.
Quote context
[...]
- Forget it. Give me the address. I'll race to the scene of the crime. Right. Goodbye.
- Batman, sir... You forgot your box of slides.
- Fake a headache, speed home wait for me in the Bat-cave.
- Boys and girls, go back to your studies. Believe me, nothing in life is free!
- High school dropouts, most of them.
- It's a pretty good haul, isn't it?
- Peanuts, my boy, mere peanuts. That bar job was just a pot boiling appetizer for the real feast.
- Oh-ho-ho! What an inspired stroke of mind... buying up the One-Armed Bandit Novelty Company.
[...]