Belly Button Rings is a modern invention and has never been recorded in primitive cultures; however the navel has long been recognised as an erogenous zone, because of the difference between men's and women's stomachs. Belly Button rings is the most popular piercing. No other piercing marks the modern American piercing scene like the navel piercing. If you ask the average person considering the belly button rings or other navel jewelry, you will probably hear that it is just plain sexy.