- Mama, we fooled her!
- Well, if you can fool Katie, you can fool anyone.

4 seconds sound clip from the Meet Me in St. Louis (1944) movie soundboard.

You can hear this line at 00:50:36.325 in the DVD version of the movie.

Quote context

[...]

- And Mr. Braukoff was beating his wife with a red-hot poker.

- I never would have believed it. He looks like such a quiet man.

- And you know something else?

- Don't tell! You crossed your heart you wouldn't tell.

- I crossed it with my left hand.

- Mr. Braukoff has empty whiskey bottles in his cellar.

- Boo!

- Mrs. Smith, who are these boys?

- It's me, Katie. It's Agnes.

- The saints preserve us, it is! You had me fooled.

- Mama, we fooled her!

- Well, if you can fool Katie, you can fool anyone.

- I'll answer it, Mama.

- Agnes, I thought you were a drunken ghost.

- But I am.

- She's a horrible ghost, and I'm a terrible drunken ghost.

- She was murdered in a den of thieves, and I died of a broken heart.

[...]