Jennifer, that is Old Jennifer, usually gets home around now. I hope we're not too late.

4 seconds sound clip from the Back to the Future Part II movie soundboard.

You can hear this line at 00:29:15.590 in the Blu-ray version of the movie.

Quote context

[...]

- How's Granddad's little pumpkin?

- How did you do that? How did he do that?

- Oh, out on the golf course.

- Are your folks home yet? I brought pizza for everyone.

- Oh, who's going to eat all that?

- Oh, I will.

- Damn this traffic!

- Jennifer, that is Old Jennifer, usually gets home around now. I hope we're not too late.

- What is it? What's the matter, Doc?

- For a moment, I thought I saw a taxi in my rear display. I thought it was following us. Weird.

- I can't believe this window's still broken.

- Well, when the scenescreen repairman called Daddy a chicken, Daddy threw him out of the house. Now, we can't get anybody to fix it.

[...]