Gwendolyn Whiteside is the harelip whose fierce sex drive makes for one very funny scene.
From the suntimes.com
Back home, Cassie gives birth to a baby girl with a harelip and incurable heart problems.
From the nytimes.com
It was news to me, for example, that the hare is credited with magical powers that enable it to snatch dead children from their coffins or give a harelip to an unborn child.
From the newscientist.com
More examples
Cleft lip: a congenital cleft in the middle of the upper lip
Cleft lip and cleft palate, also known as orofacial cleft, is a group of conditions that includes cleft lip (CL), cleft palate (CP), and both together (CLP). A cleft lip contains an opening in the upper lip that may extend into the nose. The opening may be on one side, both sides, or in the middle. A cleft palate is when the roof of the mouth contains an opening into the nose...
(French : fente labiale) Uni or bilateral closure defect of the upper lip.
A congenitally deformed lip, usually the upper one, in which there is a vertical fissure causing it to resemble the cleft lip of a hare.