We have been over this already.
4 seconds sound clip from the A Few Good Men movie soundboard.
You can hear this line at 01:12:34 in the Blu-ray version of the movie.
Quote context
[...]
- You can call your next witness tomorrow morning
- I want to go over the doctor again.
- I think we're taking the right approach.
- We have been over this already.
- The doctor's not telling the truth.
- Oh, that's a relief! I was afraid I wouldn't be able to use the 'liar, liar, pants on fire' defense.
- Let's go over what we have, okay?
[...]