What is a pig plus a Ginnie pig?

A pig plus a guinea pig humorously combines two distinct animals: a pig, which is a larger farm animal, and a guinea pig, a small domesticated rodent. While they are both called "pigs," they belong to different species and have different characteristics. The phrase can also be interpreted as a playful way to discuss mixing traits or attributes of both animals. Ultimately, the combination doesn't yield a real animal but rather highlights their differences and similarities in a light-hearted manner.