You say potato and I say pot-ahto. You say tomato, I say tom-ahto.

7 seconds sound clip from the When Harry Met Sally... movie soundboard.

You can hear this line at 01:32:37 in the Blu-ray version of the movie.

Quote context

[...]

- Particularly, the coconut soaks up a lot, so it's important to keep it on the side.

- Right.

- It had to be you... (2)

- I wandered around and I finally found the somebody who could make me be true and could make me be blue and even be glad just to be sad thinking of you.

- But you say ee-ther, and I say either. You say nee-ther, I say neither.

- Ee-ther, either. Nee-ther, neither. Let's call the whole thing off.

- You say potato and I say pot-ahto. You say tomato, I say tom-ahto.

- Potato, pot-ahto. Tomato, tom-ahto. Let's call the whole thing off.

- Oh, if we call the whole thing off, then we must part. And though if we ever part, that would break my heart.

- You say laughter, I say larf-ter.

- You say after, I say arf-ter. Before we know we need each other so we'd better call, call it off, oh!

[...]