A triangular area of mucosa on the ventral side of the penis with the frenulum at the apex, the ridged band along the sides, and whose base is the junction between the inner and outer foreskin (the transition zone).

A highly erogenous area, often completely ablated (destroyed) by circumcision.

Described by Ken McGrath and announced at the Sixth International Symposium on Genital Integrity, Sydney, 9 December 2000.

Image Source: Wikipedia entry for Frenulum of prepuce of penis