My dear young lady, you happen to be looking at an expert fisher fox.
10 seconds sound clip from the The Fox and the Hound (1981) movie soundboard.
You can hear this line at 01:03:34 in the Blu-ray version of the movie.
Quote context
[...]
- Well, you know something? This stream is just full of trout. Do you think you could catch one?
- My dear young lady, you happen to be looking at an expert fisher fox.
- Oh, Tod, Tod. Don't overdo it.
- I know all the tricks. In fact, I... I never miss.
- Please let him catch a fish.
- Here comes a whopper! Now, watch closely.
[...]