You know, Ma, you never know what we're gonna find out here.
4 seconds sound clip from the The Goonies movie soundboard.
You can hear this line at 01:04:36 in the Blu-ray version of the movie.
Quote context
[...]
- Hi, sir. My name's Lawrence. Sometimes people call me Chunk.
- You know, Ma, you never know what we're gonna find out here.
- Whoa, look at this. Look how deep it is down there.
- I ain't gonna go first. What, are you kiddin' me?
[...]