I feel I should be doing something, but I don't know what.
6 seconds sound clip from the Black Christmas (1974) movie soundboard.
You can hear this line at 00:32:30 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, this is Jess. She lives in the same sorority house as Clare.
- Sergeant, bring me the file on the Harrison girl. And take care of this.
- No, thank you very much, but I just have no appetite.
- I feel I should be doing something, but I don't know what.
- Well, why don't you just try to stop worrying?
- The best thing you can do is stay right here. I'm sure she'll call or show up soon.
- You don't believe me, do you? Well, I mean how could I make something like that up?
[...]