He's a good kid.
3 seconds sound clip from the The Roaring Twenties (1939) movie soundboard.
You can hear this line at 01:06:28 in the DVD version of the movie.
Quote context
[...]
- Excuse me. I wanna see if I can grab a dance.
- That'll be a break for some dame.
- Mr. Hart, you're wanted on the telephone.
- Stick around, Lloyd. She's coming on again soon.
- I hope you know what you're talking about.
[...]