- Oh, Matt, you know what? I have to ask you another thing. Can you spell cat?
- F-O-X.

9 seconds sound clip from the You've Got Mail movie soundboard.

You can hear this line at 00:29:04.040 in the Blu-ray version of the movie.

Quote context

[...]

- Well, I don't have a daughter. Oh! No, I'm not married. But eventually...

- So the big, bad Fox Books can just go to hell.

- Here you go.

- Thank you. Hey, we're ready?

- That's nice.

- Bye, Kathleen.

- Goodbye, Annabel. Goodbye, Matt.

- Bye.

- Oh, Matt, you know what? I have to ask you another thing. Can you spell cat?

- F-O-X.

- Cat. Thanks. Good thing it wasn't the fish. Take care!

- No protests, no demonstrations. The neighborhood loves us.

- They're wondering where we've been all these years. They're wondering how they ever did without us.

- It's a hit!

[...]