SEPTUM PIERCING

The septum piercing passes through the nasal septum (the middle of the nose) and is often referred to as a "bull-ring piercing." The nasal septum is the cartilaginous tissue dividing wall between the nostrils. Generally, the cartilage itself is not pierced, but rather the small gap between the cartilage (also known as the "sweet spot") and the bottom of the nose, typically at a gauge no smaller than 14ga (1.6mm).
It should be noted that extreme stretching of the septum will definitely deform the nose, pushing it down and out. This deformity is often referred to as "septum droop." The degree of deformity will differ from person to person depending on their nasal anatomy.