The second picture from my first three requests. Can't wait to see the last one! Again, thanks, DZAladan!
Yay! Finally! It's been more than a year since I submitted this question. Waiting for the answer was basically the only reason I was following Ask Pun Pony blog all this time.
Not exactly the answer I had in mind, but I expected this kind of pun. And it is drawn really good, so kudos to the artist!
Originally this was among my very first three requests, but it was made only now. Thanks, DZAladan!