You have got take the upper hand in all situations, or people, whether dead or alive, will walk all over you.
7 seconds sound clip from the Beetlejuice movie soundboard.
You can hear this line at 00:57:41 in the Blu-ray version of the movie.
Quote context
[...]
- It's locked. How did they get in?
- Maybe I have a chance to teach you something here.
- Open up!
- Listen, you guys, these ghosts are really nice people.
- I think we scared them away, so let's just leave them alone, all right?
[...]