(M)ost metals form an oxide layer when exposed to oxygen. Some are bad, but some "passivate" the surface, protecting it from corrosion (e.g., aluminum)
[F21/5'10/84kg] My normal vagina that I sadly grew up thinking was disgusting since most porn/art/other media would depict women with small labia and no hair or razor bumps. As it turns out, all pussy is precious, you have a cute pussy, own it ✌🏻