Hello, kiddies, meet The Joker. And no hard feelings.

9 seconds sound clip from Batman (1966) - The Joker Goes to School (S1E15) TV Series.

You can hear this line at 00:12:00 in the Blu-ray version of the movie.

Quote context

[...]

- Here it is, everybody, The Joker. Don't be deceived by that grin, anyone.... He's one of the most malevolent malefactors we've ever met.

- I'll bet he's a master of makeup too.

- You're right. He is.

- He might be skulking around here in any one of 50 outrageous outfits. For example, here's another one.

- A little closer, kids, I want you to see that phony flower in his button hole. Sometimes it shoots out water. Sometimes powder. Other times, knock-out gas.

- Hey!

- Holy magician!

- Hello, kiddies, meet The Joker. And no hard feelings.

- Corny, aren't I?

- Joker, what are you doing here?

- Oh, just passing by. I heard my name and I couldn't resist shooting a jolly jet through the tiny perforation in that screen.

- Just passing by, huh? To do what?

[...]