I haven't had a good laugh since before Johnny was murdered.

3 seconds sound clip from the Dead Reckoning (1947) movie soundboard.

You can hear this line at 01:14:37.340 in the Blu-ray version of the movie.

Quote context

[...]

- You think fast, don't you, sweetheart?

- I ought to hate you for thinking a thing like that. But I can't. You can say anything, do anything.

- Oh, Rip, what does a girl have to do with you? Turn inside out to make you see?

- You know, you do awful good. I came here to...

- Go ahead, put Christmas in your eyes and keep your voice low. Tell me about paradise and all the things I'm missing.

- I haven't had a good laugh since before Johnny was murdered.

- I'm not the type that tears do anything to. I'm the brass knucks in the teeth to Dance Time type.

- It's no use with you, is it?

- Maybe the trouble is, my name isn't Johnny, and I never taught college anywhere, and I don't appreciate the finer things of life. Like looking at a doll cry, and taking the rap for a murder she committed.

- Johnny didn't tell you that!

- Why shouldn't he? He told me everything else, didn't he?

[...]