A horse walks into a bar. The bartender says, "Why the long face?"
Barack Obama replies, "His jockey just lost his health insurance, which should be the right of all Americans."
Humorist Andy Borowitz came up with that joke in the summer of 2008, when comedians were still trying to get a handle on how to make fun of then-candidate Obama. Unfortunately, the hypothetical Obama had a point, and still does: Jockeys are getting royally screwed.