Dumb idiot, you've forgotten what I've taught you.
6 seconds sound clip from the Of Cooks And Kung Fu (1979) movie soundboard.
You can hear this line at 00:25:27 in the Blu-ray version of the movie.
Quote context
[...]
- Try this one: sitting on the toilet. Now show some manners next time or I'll have you eating shit.
- Oh. Must have been a mouse. Or a bloody big rat.
- Where the hell have you been? What's that stink?
- Well it's like this. Some bastard I met argued with me then he beat me up.
- Dumb idiot, you've forgotten what I've taught you.
- Grandpa, please listen to me!
- Grandpa, let me explain. Hear me out, won't you?
- Speak, what do you have to say?
- Which style? I used all six cooking styles. I started cooking with sweet and sour pork.
[...]