Mm, maybe.
3 seconds sound clip from the Mister Ed - Season 1, Ep. 4 - Kiddy park TV Series.
You can hear this line at 00:08:32 in the DVD version of the movie.
Quote context
[...]
- You'd better rush back to the store. You forgot to get snowshoes in case there's a blizzard.
- No fooling. What are you gonna do with all these?
- I'm running a sale on Monday.
- I think I'll wear the brown belt with this. What do you think?
- I'm worried about leaving Ed.
- It would break your heart to see Ed. He feels terrible about being left behind.
- That's silly. You're just imagining things.
- Why, whoever heard of taking a horse along on a fishing trip?
[...]