Well... I don't think I exactly know...
4 seconds sound clip from the Criss Cross (1949) movie soundboard.
You can hear this line at 01:17:58.178 in the DVD version of the movie.
Quote context
[...]
- Nothing. I'm just a little nervous. You understand. Forget it.
- Well, I guess I'd better be getting back to my wife.
- Mr. Nelson, could I... Could I ask you... Would you do something for me? A big favor?
- Yeah.
- Well... I don't think I exactly know...
- Thanks.
- Thompson. Thompson? Come on, Thompson. I waited.
- I got your clothes. You're comin' with me.
- Where?
- Slim wants to see you. Wants to find out where the money is, where Anna is. Come on.
- You can't get me out of here. You can't do a thing to me. Not a thing.
[...]