What do you call a pig that practices Karate?

The pun behind the correct answer, "PorkChop," cleverly combines a common dish made from pork and the action of a chop, which is a fundamental move in karate. The humor arises from wordplay, using the term "pork" to refer to pig and "chop" to reflect a karate move. This play on words evokes a light-hearted image of a pig associated with martial arts, specifically karate, while being memorable and amusing.

The other choices, while also humorous, don't contain the same clever pun. "Karate Pig" directly describes the animal’s action without incorporating the playful wordplay. "Kung Fu Hog" mixes martial arts terminology, but it shifts focus from karate to kung fu, altering the original context. "Ninja Pig" creates an entertaining image of stealth but strays from karate entirely. Thus, "PorkChop" stands out for its clever fusion of culinary and martial arts terms.