I'll tell you why.
4 seconds sound clip from the The Big Knife (1955) movie soundboard.
You can hear this line at 01:07:25 in the Blu-ray version of the movie.
Quote context
[...]
- You're the only one who can call me that. I'll tell you why. I like you, Charlie.
- I'm going to get a dog. A poodle. Big or little?
- To this very day, my mother can't tell my father that I send them money.
- Catholics believe in large families.
- But I'll tell you what, I'm saving my money now.
- I'm waiting for Mr. Right to come along. If I ever meet the guy around here.
[...]