That was the sign, man.
4 seconds sound clip from the The Big Lebowski movie soundboard.
You can hear this line at 00:34:43 in the Blu-ray version of the movie.
Quote context
[...]
- Okay, we proceed but only if there is no funny stuff.
- Just tell me where the fuck you want us to go.
- So, all we gotta do is get her back.
- No one's in a position to complain.
- Yeah, terrific, Walter. But you haven't told me how we're gonna get her back. Where is she?
- That's the simple part, Dude.
[...]
The Big Lebowski Sound Clip
Actors: Jeff Bridges (Jeffrey "The Dude" Lebowski), John Goodman (Walter Sobchak), Julianne Moore (Maude Lebowski)
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