Mentally incompetent, like animals after a long famine.
6 seconds sound clip from the The Last Man on Earth (1964) movie soundboard.
You can hear this line at 01:08:20 in the Blu-ray version of the movie.
Quote context
[...]
- You must be hungry. I'll fix you some dinner.
- You know, you should eat. I can't.
- You seem used to them. As much as anybody could be.
- I'm not frightened of them anymore, if that's what you mean.
- I protect myself against them, but only because there are so many. Individually, they're weak.
- Mentally incompetent, like animals after a long famine.
- If they weren't... they surely would've found a way of breaking in here a long time ago.
- He was my friend. Your friend?
[...]