That's not your line, Dave. That's the firing squad for you.
4 seconds sound clip from the Odds Against Tomorrow (1959) movie soundboard.
You can hear this line at 00:11:58.878 in the Blu-ray version of the movie.
Quote context
[...]
- I'm just a bone picker in a four-man graveyard.
- Are we social climbing, David?
- That's not your line, Dave. That's the firing squad for you.
- That's for junkies and joyboys. We're people.
- You don't even want to hear?
- I did all my dreaming on my mother's knee.
[...]