What is frenum percing?

A frenum is a male genital piercing. Basically a frenum piercing is a form of a frenulum piercing. So is a fourchette.But really a frenulum piercing is an oral piercing. Frenulum can be either an upper frenulum(smiley), lower frenulum (frowney), or even a tongue web piercing. A frenulum is a fold/piece of tissue that restricts the movement of an organ.