- Now remember, nephew, when I yell, fire, you pull the cord.
- Yeah, yeah, this is fun.

7 seconds sound clip from the Foghorn Leghorn - False Hare (1964) Warner Bros. Merrie Melodies theatrical short.

You can hear this line at 00:04:15.433 in the DVD version of the film.

Quote context

[...]

- Oh, boy. Look, Mac, can't you just stand straight, arms down, like this?

- Oh, I get it NOW.

- Surprise, surprise!

- And when he comes out of the dark room, let me know what develops.

- Now then, we'll step up to the next plateau of the initiation.

- I'll just step around back and you crawl through that hole there.

- Now remember, nephew, when I yell, fire, you pull the cord.

- Yeah, yeah, this is fun.

- Uh, which whole do you mean, Doc?

- Why don't I take this one and you take that one.

- Sure, sure, that's a good idea.

- Are you all set, Mac?

- Oh, yeah, I'm all set.

[...]