Barbara, you don't know what's out there.
3 seconds sound clip from the Beetlejuice movie soundboard.
You can hear this line at 00:19:43 in the Blu-ray version of the movie.
Quote context
[...]
- What's the good of being a ghost if you can't frighten people away?
- Honey.
- No, I'm not putting up with this.
- Barbara, you don't know what's out there.
- Barbara!
[...]