You're mistaken, I'm not the one.
5 seconds sound clip from the Drunken Dragon movie soundboard.
You can hear this line at 00:10:13 in the DVD version of the movie.
Quote context
[...]
- I'm sorry, but you should go on a diet, ya know.
- Huh? Are you saying I'm fat?
- You're mistaken, I'm not the one.
- Hold it! I don't know you, you're pulling my leg!
- What do you mean? Granny knows you, dear.
- Granny!
[...]