Why do you ask?
3 seconds sound clip from the Drunken Arts & Crippled Fist movie soundboard.
You can hear this line at 00:28:01 in the DVD version of the movie.
Quote context
[...]
- Look, here, I never started a fight ever. They attacked me to start with.
- My master said I'm an expert. I know all kinds of Kung Fu.
- Hey brother, do you reckon we've seen the last of those men?
- Revenge? But why should they?
- You don't understand. You're a real fool.
- If you think I'm a real fool then what are you?
[...]