Oh, she's just got a cold. She's in bed. Caught it coming home from school.
6 seconds sound clip from the It's a Wonderful Life (1946) movie soundboard.
You can hear this line at 01:26:59 in the Blu-ray version of the movie.
Quote context
[...]
- Well, what's the matter with our car? Isn't it good enough for you?
- Excuse me. Excuse me. Excuse you for what?
- All right, darling, you're excused.
- Now, go on upstairs and see if little Zuzu wants anything.
- Zuzu? What's the matter with Zuzu?
- Oh, she's just got a cold. She's in bed. Caught it coming home from school.
- What is it, a sore throat or what?
- It's just a cold. The doctor says it's nothing serious.
- The doctor? Was the doctor here?
- Yes, I called him right away. He says it's nothing to worry about.
[...]