That is Priceless by Steve Melcher for May 17, 2016

Pretty fancy outfit and ride for a mailman.

So when you requested a pony espresso, you actually meant a small coffee?

“You did not! splash my horse, did YOU?”

Save it for the roses.

You can lead a horse to the toilet, but you can’t make him piss.

Move on, before your horse needs to go, too.

A click-to-enlarge version, of this cropped image, can be found at Mr. Melcher’s blog entry (yesterday). Its full, click-to-enlarge image can be found here.The Dispatch-Bearer is shown, with a different coloration click-for-larger-than-actual-size image, by its current-location page.Another different coloration image can be found here. Other works, and details about the artist, can be found here. The artist’s Wikipedia page (Google translated Italian Wikipedia page has more) and collection (more under Subcategories at each level).Second, of the 2 works, by this artist, that have, so far, appeared in Mr. Melcher’s blog, to also appear here (2 total).

“NOW I understand the ‘I gotta pee like a Russian race horse’ saying.”

" Hang on a sec, I know that notice from Publisher’s Clearing House was in this pouch…"

What can happen when one doesn’t get the stallion to the stud farm quickly enough.