An extrovert
A penis, seen as an everted version of a vagina
A navel that protrudes from the abdomen.
Anything convex.
A vagina with external labia minora.
A person who moves around a lot and never settles down; a vagrant.
A geological phenomenon where rocks move and inscribe long tracks along a smooth valley floor without animal or human intervention.
A meteoroid.
A womanizer.