Invite him to lunch.
4 seconds sound clip from the Mister Ed movie soundboard.
You can hear this line at 00:04:45 in the DVD version of the movie.
Quote context
[...]
- This is your neighbor, Wilbur Post.
- Would you like to go for a walk?
- A walk? I'd look rather conspicuous in my pajamas.
- Oh, I'm sorry. Were you sleeping?
- No, thank you. I just had dinner.
- I mean tomorrow, at the club.
- It's on my horse. I mean, I'll pay.
[...]