- What do you mean?
- No, I mean it.

4 seconds sound clip from the Poltergeist (1982) movie soundboard.

You can hear this line at 00:54:40 in the Blu-ray version of the movie.

Quote context

[...]

- We have got much more than the paranormal episode taking place here.

- There is a measurable physical science in this house that goes beyond any of the creaking doors or cold spots I've experienced.

- The voice on the television, where is it coming from?

- The absence of a signal on a channel that is not receiving a broadcast means that it's free to receive a lot of noise from all sorts of things, like shortwaves.

- Solar disturbances, car ignition sparkings.

- Outer space. Or inner space.

- Yes. What if these people had an area of bilocation in their own living room?

- What do you mean?

- No, I mean it.

- If that is the way out, then maybe somewhere in this house there's a way in.

- No, please, leave it on. Thanks.

- You know, when it's quiet like now, I can imagine how all of this must look from your side. I'm really embarrassed.

- Nonsense. I'm the one who should be embarrassed, being here with you nice people.

[...]