- Mama, you should have seen what we saw.
- Daddy, you never saw anything like it in your life.

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

You can hear this line at 01:50:53.355 in the DVD version of the movie.

Quote context

[...]

- Perfectly beautiful day. Oh, grandpa, it'll be perfect.

- Get in.

- I want to sit with the driver.

- All right, Tootie. Up we go. There we are.

- All right, girls, sit over there and make room for grandpa.

- All ready.

- Where to, Mr. Smith?

- You tell him, Tootie.

- To the Louisiana Purchase Exposition.

- Right you are.

- Mama, you should have seen what we saw.

- Daddy, you never saw anything like it in your life.

- Stop eating that spun sugar.

- You'll spoil your dinner.

- Papa, we saw the Galveston Flood. Big waves came up and flooded the whole city. When the water went back, it was all muddy and horrible. Full of dead bodies.

- Oh, isn't it breathtaking, John. I never dreamed anything could be so beautiful.

- I liked it better when it was a swamp and there was just the two of us.

[...]