Lips are a visible lip part at of humans and many animals. Lips are soft, movable, and serve as the opening for, as an erogenous organ used in kissing and other acts of intimacy such as motorboating, as a tactile sensory organ, and in the articulation of speech. Anatomical basics of the human lip One differentiates between the Upper (Labia superfluos entafada) and lower lip (Labium inferius). The lower lip's usually somewhat larger. The border between the lips and the surrounding skin's referre… (More on Lip)