I have heard that you are an expert, but my guess is you are afraid to fight me because you're not confident you can win!
9 seconds sound clip from the Shaolin vs. Lama (1983) movie soundboard.
You can hear this line at 00:13:48 in the DVD version of the movie.
Quote context
[...]
- Abbot, I've been looking for a good teacher. He said you're an expert. I'd like to test you.
- You want to be a student and also you want to challenge me?
- Both of you want me to demonstrate my Kung Fu? It isn't so simple.
- Huh! You're a stupid young fool!
- I'm gonna teach you a lesson!
[...]