There we are.
3 seconds sound clip from the Mister Ed movie soundboard.
You can hear this line at 00:02:40 in the DVD version of the movie.
Quote context
[...]
- Well, now that we've met, perhaps I'd better put you down.
- Oh, no, no. You see, it's bad luck.
- Whoa. How do you do? I'm Wilbur Post.
- Not right now. I have a feeling that I might be intruding.
[...]