Sit down and stay there until you're told to leave.
5 seconds sound clip from the My Cousin Vinny movie soundboard.
You can hear this line at 01:42:42 in the Blu-ray version of the movie.
Quote context
[...]
- What'd you do in your father's garage?
- Tune-ups, oil changes, brake relining, engine rebuilds, rebuilt some trannies, rear ends...
- Okay. Okay. But does being an ex-mechanic necessarily qualify you as being expert on tire marks?
- Sit down and stay there until you're told to leave.
[...]