Oh, Grandpa, you're the first human being I've danced with all evening.

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

You can hear this line at 01:33:51.334 in the DVD version of the movie.

Quote context

[...]

- Hey, Miss Esther! Where's this Lulu Ballard you put me down for? I'm ready and willing.

- Oh, well, Clinton, there's been a mistake and I'm taking all of her dances, if you don't mind.

- Mind? I should say not!

- Pardon me, young man, but in the great country of China when a stranger admires one of your possessions it's common courtesy to offer it to him.

- That's very interesting.

- Yes.

- Well, I spent many years in China and if you want to make me feel thoroughly at home, you might offer me your partner.

- Huh?

- Spoken like a gentleman.

- Oh, Grandpa, you're the first human being I've danced with all evening.

- You know, Esther, I wouldn't want this rumored about, but I'm pretty proud of you.

- It's our last dance in St. Louis. I feel like I'm gonna cry.

- I wouldn't have said it, Esther, if I thought it would make you cry.

- I've imagined you saying it thousands of times. And I always planned exactly how I'd act. I never planned to cry.

[...]