Well, it's gonna be both our asses if you're wrong.
4 seconds sound clip from the Die Hard (1988) movie soundboard.
You can hear this line at 01:28:21 in the Blu-ray version of the movie.
Quote context
[...]
- Fritz is checking the explosives.
- I'll check the explosives. You just get the detonators.
- You gotta believe me. There was nothing I could do.
- Well, it's gonna be both our asses if you're wrong.
- Did you catch that bullshit Hans was running? It doesn't make sense, man.
- Don't ask me, man. I'm just a desk jockey who was on my way home when you rang.
- The way you drove that car, I figured you for the street, Al.
[...]