It's too hot.
3 seconds sound clip from the Cool Hand Luke movie soundboard.
You can hear this line at 00:52:59 in the Blu-ray version of the movie.
Quote context
[...]
- You have to close those things or we'd drown. But it sure is suffocating in here.
- When I was in the Navy, I was on submarine duty once, and you get down there...
- Will you tell your story walking, huh?
- Do you see my skinny little boy chow tonight?
- He was matching you plate for plate.
- I wasn't feeling good. I think I got an ulcer or something.
- He had a bigger spoon. Make you look like yours had a hole in it.
[...]