- That's not loaded, is it?
- Of course, it isn't loaded. Don't you think I know how to handle a gun?

4 seconds sound clip from the The Best Years of Our Lives (1946) movie soundboard.

You can hear this line at 01:26:32.838 in the Blu-ray version of the movie.

Quote context

[...]

- I've been wanting to have a chance to talk to you.

- What about?

- About everything.

- About us.

- What about us? We're all right, aren't we?

- No.

- Listen to me, Homer.

- I'm listening.

- You wrote me that when you got home you and I were going to be married. If you wrote that once, you wrote it a hundred times. Isn't that true?

- Yes, but things are different now.

- Have you changed your mind?

- Have I said anything about changing my mind?

- No. That's just it. You haven't said anything about anything.

- That's not loaded, is it?

- Of course, it isn't loaded. Don't you think I know how to handle a gun?

- I don't know what to think, Homer. All I know is, I was in love with you when you left and I'm in love with you now. Other things may have changed, but that hasn't.

- You wanna see how the hooks work? You wanna see the freak? All right, I'll show you. Take a good look.

- I didn't mean anything, Homer. I was only...

- I'm sorry, Luella. It isn't your fault. Go on and play with your friends.

[...]