You're talking about something you can't get your fingers on, and it's galling you. That's what you're talking about, I know.
7 seconds sound clip from the It's a Wonderful Life (1946) movie soundboard.
You can hear this line at 00:33:28 in the Blu-ray version of the movie.
Quote context
[...]
- People were human beings to him, but to you, a warped, frustrated old man, they're cattle.
- Well, in my book, he died a much richer man than you'll ever be.
- I'm not interested in your book.
- I'm talking about the Building and Loan.
- I know very well what you're talking about.
- Well, I've said too much. I...
- You're the Board here. You do what you want with this thing.
- There's just one thing more, though.
[...]