This is adecoration worn by the women, sometimes the male, on the nipple. This makes the nipple look appealing and makes women want to shake the boob around in a circular motion.
Fake nipples. A term used by breast cancer survivors to describe the fake nipples created during breast reconstruction following mastectomy. Fipples can be constructed by cutting and stitching the skin in place, taking a skin graft from another part of the body, medical tattooing, or any combination of the above. (See also: foobs.)
Now that my foobs are done I can't wait to get my new fipples! It's not as good as the real thing but it sure beats being boobless.