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dydoe

n. A male genital piercing that passes through the ridge of the glans penis on the head of the penis.

Wikipedia
Dydoe

A dydoe is a type of male genital body piercing that passes through the ridge of the glans on the head of the penis. Commonly, one is centrally placed on the ridge of the glans (as seen at right), or two are placed on either side (picture below). Less often, a "king's crown" is where several dydoes are placed around the head of the penis. The jewelry is usually a 14 gauge, curved barbell with a ball on either end, although a ring may be used at a higher chance of rejection. A deep dydoe (also known as "Zephyr") is one that uses a longer barbell and exits near the tip of the penis.

The word dydoe is thought to come from the word ' doodad', which means 'a decorative embellishment', as it can be visually attractive to some.