It'll be like the last time, you'll attack from behind, and you'll get your nose flattened.
7 seconds sound clip from the Executioners From Shaolin (1977) movie soundboard.
You can hear this line at 00:55:46 in the DVD version of the movie.
Quote context
[...]
- That's enough. Ask your father. I'm not gonna fight with you.
- Ma. Do you think I'm good enough to beat Dad?
- These last few years, your father practiced hard. Right now, you're no match.
- It'll be like the last time, you'll attack from behind, and you'll get your nose flattened.
- I thought you knew, no one's allowed to watch him practice.
[...]