Mouth, your father's a plumber. What are these pipes all about?
5 seconds sound clip from the The Goonies movie soundboard.
You can hear this line at 00:49:52 in the Blu-ray version of the movie.
Quote context
[...]
- What the hell you're doin'? He's only a kid. Can't you handle a kid, even?
- Yeah!
- Mouth, your father's a plumber. What are these pipes all about?
- These look like water pipes, guys.
- Maybe... Wait a minute, guys. Shut up for a minute!
- Okay. These pipes must lead to a building or something. A foundation.
[...]