Alien
The original quote, with slang
Ripley: When we throw the switches, how long before the ship blows?
Parker: Ten minutes.
Ripley: No bullshit?
Parker: If we ain't outta here in ten minutes, we won't need no rocket to fly through space.
What does it mean?
Ripley: When we throw the switches, how long before the ship explodes?
Parker: Ten minutes.
Ripley: Are you serious?
Parker: If we aren't out of here in ten minutes, we will fly through space without a rocket.