What do you call a pig that loves the sky?

This joke flies high on the wings of wordplay, specifically a pun that plays on a well-known idiom. The humor comes from twisting the phrase "hog-wild" to literally describe a pig, or "hog," that is enthusiastic about the "wild" blue yonder, or the sky. It creates a silly image of a swine with an unexpected passion for aviation or simply gazing upwards with great excitement.

The phrase "hog-wild" is an American English idiom that means to be wildly enthusiastic, excited, or out of control. It's been around since at least the early 1900s, with its earliest known use appearing in 1893. While the precise origin of associating hogs with such unbridled excitement isn't entirely clear, it's generally believed to refer to the boisterous and sometimes unruly behavior of pigs when they're particularly stirred up. So, when someone "goes hog-wild," they're usually just having a fantastic time, not actually attempting to sprout wings.