You know, I'm very flattered that I'm the only human being that you picked on to talk to, old horse.

7 seconds sound clip from the Mister Ed movie soundboard.

You can hear this line at 00:19:39 in the DVD version of the episode.

Quote context

[...]

- Hi, Wilbur.

- Hi, Ed.

- What you doing?

- Oh, just thought I'd drop in, say hello.

- That's nice.

- You know, I'm very flattered that I'm the only human being that you picked on to talk to, old horse.

- That's swell.

- Uh, can I get you some oats or anything, old horse?

- Nope. I'm fine.

- Uh, can I open the window for you, Mister Ed?

[...]