Oh, you can't get out backwards. You've gotta go forwards to go back. Better press on.
7 seconds sound clip from the Willy Wonka & the Chocolate Factory movie soundboard.
You can hear this line at 00:50:54 in the Blu-ray version of the movie.
Quote context
[...]
- We've just come through there.
- Huh. How do you like that? There we are...
- What is this, Wonka? Some kind of fun house?
- I've had enough. I'm not going in there.
- Come on, Violet, we're getting out of here.
- Oh, you can't get out backwards. You've gotta go forwards to go back. Better press on.
- Hey, the room is getting smaller!
- No, it's not. He's getting bigger.
- I doubt if any of us will get out of here alive.
[...]