- How do you kill something that's already dead?
- Well, how do I know, Fred? I don't know, let me think.

4 seconds sound clip from the The Return of the Living Dead (1985) movie soundboard.

You can hear this line at 00:21:30.166 in the Blu-ray version of the movie.

Quote context

[...]

- On the other hand, we destroy all this evidence around here and we keep our mouths shut.

- That's it! Let's do that, Burt!

- Yeah, Frank, you're right. That's what we got to do.

- One question, Frank. This guy screaming in here, you're sure he's a dead cadaver?

- Why don't you open the door and find out?

- No, that's all right, Frank. I'll take your word for that.

- If it is a reanimated body, we're going have to... we'll have to kill it.

- How do you kill something that's already dead?

- Well, how do I know, Fred? I don't know, let me think.

- It's not a bad question, Burt.

- In that movie, they destroyed the brain to kill them. Is that what they did?

- The brain, right.

- Yeah.

- What do doctors use to crack skulls with?

- Surgical drills.

- Here, hold this, Frank.

- Now listen to me, both of you, very carefully. Freddy, you're gonna open that door.

[...]