I've had you in my barber chair day after day, and many's the time I've wanted to slit your fool throat from ear to ear.
11 seconds sound clip from the Dark Command (1940) movie soundboard.
You can hear this line at 01:03:26 in the Blu-ray version of the movie.
Quote context
[...]
- Been ridin' myself saddle silly and listening to your snivellin' long enough.
- Well, you're relievin' me of that, and that's fine. Maybe I ought to thank you.
- Well, I'm glad I didn't know.
- That'll be something for Cantrell to do when he gets here ridin'.
- Well, the point's well taken.
[...]