You don't know what you're doing!
4 seconds sound clip from the Terminator 2: Judgment Day movie soundboard.
You can hear this line at 00:29:08 in the Blu-ray version of the movie.
Quote context
[...]
- I'll kill you, you son of a bitch!
- 10cc of sodium amobarbital, stat!
- You don't know what you're doing!
- Get some restraints in here now!
- You don't know what you're doing! (2)
[...]