What does Buttervag mean?

Buttervag meaning in Urban Dictionary

A girl whom, besides having grotesque or deformed genitalia, is otherwise totally appealing. The nature of her genital abnormality may differ commonly in terms of its cause, kind or degree of seriousness. Cited dilemmas may include, but are not restricted to, dimensions, smell, unsightliness etc.The phrasing of the term hails from the typical colloquialism: Butterface.