The lip disc is a tool that brings alterations to the body. A few days after the birth of only male children, the father proceeds to the perforation of the lower lip of the newborn, inserting a small ornament made of glass or ceramic beads, which he will gradually replace with others, of increasing size. This tradition refers to the importance of oratory art and authority, of the ability to speak, which for the Kayapo is one of the most important social activities.