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.

- But he didn't, did he?

- Oh, he might have.

- Judy, why did you write the letter?

- Oh... Well... Because it's good business.

- You can't leave everything up to fate. Just like honesty needs a little plus, fate needs a little push.

- 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.

- Well, little chick needs plenty of looking after. Until someone else comes along who can do it better, mother hen's gonna stick pretty close to the coop.

- All right, girls, five minutes.

- Thank you.

- Honey, you look beautiful tonight. He'll be crazy about you.

- Which one?

- What does it matter? They're both famous.

[...]