What is a UV reactive tongue piercing?

A uv reactive tongue piercing is a bar or ring that reacts to special uv light, uv lights are usually found at party's disco's and nightclubs so you could stick your tongue out and have it glow ! A uv reactive tongue piercing is a bar or ring that reacts to special uv light, uv lights are usually found at party's disco's and nightclubs so you could stick your tongue out and have it glow !