Inverted nipples - thick tools' penetration - big, deep holes
Especially mature, more experienced and more kinky ladies prefer penetrating and inserting thicker and bigger tools into their nipples. Either doing it themselves or having somebody else doing this to them like abuse, torture, body modification, ritual penetration and so on. nThey mostly have experience with thinner needles from previous times, when they were younger and now they want to explore more sensation of interior deep nipple feeling. They even want to have holes in their nipples bigger and more visible and many are proud of having their nipples like this and they like to expose their modified nipples to show off with them to others.