Well, son, let's run along upstairs and get ready for bed.
3 seconds sound clip from the Song of the South (1946) movie soundboard.
You can hear this line at 00:29:15.262 in the Blu-ray version of the movie.
Quote context
[...]
- Lordy, Miss Sally, didn't sister Tempy tell you he was with me?
- Yes, she told me, but it's so long past Johnny's bedtime!
- To be sure, Miss Sally, I was telling him a tale about Brer Rabbit, and I plum forgot the time.
- Yes ma'am. It won't happen again, Miss Sally.
- Well, son, let's run along upstairs and get ready for bed.
- Miss Doshy, Johnny forgot the bundle.
- Didn't I tell you to run along home before your ma takes a stick after you?
- What us gonna do about that child?
- I wish I knew. A grandmother doesn't count for much these days.
- Yes ma'am. It's a pity, too.
[...]