Well, you two certainly are the most affectionate couple I've ever seen.
7 seconds sound clip from the Mister Ed movie soundboard.
You can hear this line at 00:04:23 in the DVD version of the movie.
Quote context
[...]
- I figured I'd put a skylight up there, and right next to my drafting table, we could build cabinets.
- A horse!
- But he wasn't here when we first looked at the place.
- Oh, let's get out of here! Or get him out of here! Or do something!
- Well, you two certainly are the most affectionate couple I've ever seen.
- I suppose that's all right. You're married.
- Him? He doesn't bite. He's just a mangy old nag.
[...]