- Think you're smart, don't ya?
- Why? Ya frightened?
- Course not!

5 seconds sound clip from the The Moon's Our Home (1941) classic radio play.

You can hear this line at 00:26:04 in the radio play.

Quote context

[...]

- And what makes you think there's anything to spoil?

- Uhhhh, well... You make me think so.

- Oh, I do, huh?

- Yeah. Sit down.

- Where?

- Well, backseat: that's where women belong.

- Now, put your arms around me.

- I will not!

- All right, if you think you can hang on! Let's go! Now, watch yourself now!

(Cherry screams)

- I told you. Better put your arms around me.

- All right, all right!

- All right. There! That's much better.

- Think you're smart, don't ya?

- Why? Ya frightened?

- Course not!

- Do you like it?

- Ohhhh, I love it!

- It gets steeper down here. Don't let go, now.

- Well?

- Oh, it was grand!

- You were frightened, though, huh?

- Oh, just a little, at first.

- Well, you'll never be frightened with me.

[...]