You nearly frightened me to death.
2 seconds sound clip from the Attack of the Crab Monsters (1957) movie soundboard.
You can hear this line at 00:16:56.788 in the DVD version of the movie.
Quote context
[...]
- Well, Jim and I will head down to south valley in the morning.
- You know, I haven't seen any insect life since we arrived.
- You nearly frightened me to death.
- Well now, I couldn't very well announce myself underwater, could I?
- Besides, you looked scared down there.
- Well, I did see something move near you.
- You did? I wonder what it could've been?
- I don't know. Just a big black shape moving through the kelp.
[...]