Potatohead
A potatohead (abreviation: KK, from german "Kartoffelkopf") is a human with a potato-shaped head. However, the potato shape of the head is not disadvantageous to his / her prettiness, but rather an unique feature of the respective human's beauty.

A potatohead is usually owned by a potatoheadowner (abreviation KKB from german "kartoffelkopfbesitzer"), who normally is a male person, as women usually rather match the criteria of a KK.
Sarah is an example of a perfect potatohead