Glass.
3 seconds sound clip from the The Shootist movie soundboard.
You can hear this line at 01:28:43.721 in the DVD version of the movie.
Quote context
[...]
- You don't give a fella very long to board this thing.
- Good morning, sir. Isn't it a beautiful day?
- It sure is. It's what we call a false spring.
- Glass.
- Mr. Sweeney... care to try your luck?
- Hmm!
- Whoa!
- What?
- Make you a little more comfortable.
[...]