So, Junior, if you want a lot of nice toys, you'll go to sleep and be a good little boy.
10 seconds sound clip from the One Ham's Family (Tex Avery, 1943) movie soundboard.
You can hear this line at 00:01:14 in the Blu-ray version of the movie.
Quote context
[...]
- I'll be back.I'll get in. If it takes me now till Christmas!
- So, Junior, if you want a lot of nice toys, you'll go to sleep and be a good little boy.
- Well, here I is. I wouldn't get out of me wittle bed.
- Daddy, mommy, are you awake?
- I will now find out what all this Santy Clause business is about.
[...]