Supposing you skipped the first step?
4 seconds sound clip from the My Cousin Vinny movie soundboard.
You can hear this line at 00:34:47 in the Blu-ray version of the movie.
Quote context
[...]
- I don't know how you can be so sure when you don't know what it is you're supposed to know.
- It's a procedure. Like rebuilding a carburetor has a procedure.
- Supposing you skipped the first step?
- You just learned the hard way that you gotta remove the carburetor first. Right?
- All right. Is there any way I could help out in this procedure situation?
[...]