What are you teaching him?
4 seconds sound clip from the Dimension X - Almost Human by Robert Bloch classic radio drama series episode.
You can hear this line at 00:10:29 in the radio play.
Quote context
[...]
- People are evil. Evil must be destroyed.
- The professor is evil. The professor must be...
- I warned you to keep out of the nursery, Professor.
- Go away.
- Junior. You don't even remember me, Junior?
- I know you. You're Professor Blaseman. You want to keep me as your slave.
[...]