Now I will kill you.
2 seconds sound clip from the Robot Monster (1953) movie soundboard.
You can hear this line at 00:40:10.283 in the Blu-ray version of the movie.
Quote context
[...]
- What are you doing here, boy?
- I came by myself. I wanted to find out what you had against me.
- I think you're just a big bully, picking on people smaller than you are.
(Ro-man calcinator ray crackling)
- You look like a pooped-out pinwheel!
- So... the calcinator death ray really cannot harm you.
- Your father must be a brilliant scientist.
[...]