Lady, I've seen this guy 3 times in my life, and all 3 times, he was on a witness stand testifying that someone was nuts.
10 seconds sound clip from the After the Thin Man (1936) movie soundboard.
You can hear this line at 00:52:03 in the DVD version of the movie.
Quote context
[...]
- Do you often have to give Mrs. Landis things to quiet her?
- First it was that Mrs. Gerris. Then the Darryl woman.
- By golly, she shot her husband, too.
- Too? What right have you to say a thing like that?
- Anybody's tongue is liable to slip.
[...]