You needn't sound so patronizing. You sound just like a mother hen looking after a little chick.
8 seconds sound clip from the White Christmas (1954) movie soundboard.
You can hear this line at 00:20:17 in the Blu-ray version of the movie.
Quote context
[...]
- Oh? Oh... Well, he could have written from Alaska.
- Judy, why did you write the letter?
- Oh... Well... Because it's good business.
- Next time, will you talk to me first before you push us and plus us right out of show business?
- You needn't sound so patronizing. You sound just like a mother hen looking after a little chick.
- All right, girls, five minutes.
- Honey, you look beautiful tonight. He'll be crazy about you.
- What does it matter? They're both famous.
- Ladies and gentlemen, the Haynes Sisters.
[...]