What is girl of pig?

It seems like you're asking about a phrase that doesn't quite make sense. "Girl of pig" isn't a common or recognized phrase in English.

It's possible you meant one of the following:

* "Girl of the pig": This could refer to a young girl who has a strong connection with a pig, like raising it or caring for it.

* "Pig girl": This is a more common term that could refer to a girl who enjoys pigs or is associated with them in some way.

* "Girl pig": This could be a slang term used to describe a girl who is considered unattractive or undesirable. This is a derogatory term and should be avoided.

Please provide more context or clarify your question if you have something else in mind.