1. Lip plate.http://www.medicalbag.com/body-modification/pucker-up-lip-plating-still-in-vogue-in-remote-tribal-villages/article/472684/
According to Daily Mail, this tradition is popular among women of the African tribe of Mursi. The women pierce their lips with discs of increasing size over the years in order to stretch it. Have you ever wondered why?
2. To show a sign.https://photito.wordpress.com/2013/12/17/lip-plate/
There's a reason that females do that on purpose and that is because it is considered as a sign - an expression of maturity that the woman is ready to bear children. The size of the disk signifies that as well as just what's much more incredible is that this practice starts right from adolescence among the tribe.