You know, sick old women are usually pretty sharp.
3 seconds sound clip from the Psycho (1960) movie soundboard.
You can hear this line at 01:11:43 in the Blu-ray version of the movie.
Quote context
[...]
- Let's put it this way. She might have fooled me, but she didn't fool my mother.
- Well, then your mother met her. Could I talk to your mother?
- No. As I told you, she's confined.
- Yes, but just for a few minutes. That's all.
- There might be some hint that you missed out on.
- You know, sick old women are usually pretty sharp.
- Can I just... Just for a moment. I wouldn't disturb her.
- I think I've talked to you all I want to. I think it'd be much better if you left now. Thanks.
- Well, all right. You sure would save me a lot of leg work if you'd let me talk to her.
- Would I need a warrant for that, too?
- Sure.
[...]