Imagine a person who stands by the chalkboard every day explaining fractions to children, while his own eyeballs feature ink patterns and his nipples have simply been cut off. It sounds like a plot from a thriller, but this is the biography of a real educator. Sylvain Helaine, an elementary school teacher working in the UK and France, has turned his own body into the most controversial art piece in the world of education. He is now in his forties, and after over thirty years of active work with the needle, he has managed to cover almost his entire skin with ink, earning him the unofficial title of the most tattooed schoolteacher on the planet.