Check.
2 seconds sound clip from the Mister Ed - Season 1, Ep. 4 - Kiddy park TV Series.
You can hear this line at 00:19:16 in the DVD version of the movie.
Quote context
[...]
- Will you put that in writing?
- Mexico.
- Are you coming home now, Ed?
- Check.
- Well, darling, did you have a good time?
- He said he didn't want to go to Mexico.
[...]