Horizontal Cheek Piercing
From BME Encyclopedia
Mouth rim/cheek surface piercing.
This unusual piercing passes from the edge of the mouth towards the back of the head and then out the cheek. It is a surface piercing usually done using a curved barbell. In the diagram on the right, you can see two of them—the lower copy of the picture highlights the location of the barbells to give you a better idea of placement.