It's possible I could be convinced.
3 seconds sound clip from the All Through the Night (1942) movie soundboard.
You can hear this line at 01:13:59.817 in the Blu-ray version of the movie.
Quote context
[...]
- I like to be conventional. Let's go in the front way.
- You might just as well have phoned and told him you were coming.
- Listen, I'm a simple man. I can only digest one hunk of bunk at a time.
- Yeah, well, you'll change your mind when you get inside.
- It's possible I could be convinced.
- Well?
- Open up.
- What do I want? What do I look like? Open up.
- Don't worry, boys. They told me there'd be nights like this.
- The main office is right down this hall. This'll open up your eyes.
- You're scaring me. Sounds like the next installment of Superman. My kids will enjoy this.
[...]