A triangle piercing is one of several forms of genital piercing applied to the vulva. It is a horizontal piercing that passes from side to side, beneath the base of the clitoral hood tissue where it meets the inner labia and under the clitoris. The name is derived from the tissue where the labia meets the clitoral hood, which looks like a triangle when pinched.
The piercing can increase sexual sensation during direct clitoral stimulation as well as during vaginal or anal penetration. the only genital piercing to do so, although it does not pass through the clitoris or the clitoral shaft. The usual jewellery worn with the piercing is a barbell. There are reports of the piercing alleviating anorgasmia in some individuals. It was subsequently developed by Elayne Angel.