- You know why.
- Why?
- Because now I'm going to take you in my arms and kiss you very quickly and very hard.

— Richard Sherman (Tom Ewell)

13 seconds sound clip from the The Seven Year Itch (1952) movie soundboard.

You can hear this line at 00:53:13 in the Blu-ray version of the movie.

Quote context

[...]

(The girl and Richard playing and Humming Chopsticks Tune at the piano)

- I don't know about Rachmaninoff, whether it shakes you and quakes you and stuff. But this really gets me.

- It does?

- And how!

- I can feel the goose pimples.

- Goose pimples?

- Uh-huh.

(The girl playing and Humming Chopsticks Tune at the piano)

- Don't stop. Don't stop. Why do you stop?

- You know why.

- Why?

- Because now I'm going to take you in my arms and kiss you very quickly and very hard.

- Hey, wait a minute!

- What happened? I kind of lost track.

- I don't know. This is terrible. There's nothing I can say, except that I'm terribly sorry.

- Nothing like this ever happened to me before in all my life.

- Honest? Happens to me all the time.

[...]