Okay.
4 seconds sound clip from the E.T. the Extra-Terrestrial movie soundboard.
You can hear this line at 01:02:08 in the Blu-ray version of the movie.
Quote context
[...]
- No. It's a fake knife. It's a fake.
- Okay.
- Be back one hour after sundown. No later.
- Ohhh!
[...]