The skin of an old woman's vagina.

the art of remembering an arousing occurrence or some porn you watched while masturbating, often handy if you have no porn or your in the shower

The pattern that gets imprinted into your skin after laying on something for too long. See frenselensis.

The piece of extra skin on the elbow which becomes flappy when the arm is extended. Through growth it becomes wrinkly and slightly crusted therefore leading to the name Rhino Skin because it is like a Rhinosorus's skin.