Apparently running out of space on his body (which is two-thirds tattooed), Brazilian Rodrigo Fernando dos Santos has moved up to his eyeballs. According to the body-modification website BME.com, eyeball-tattooing is safe if done correctly, which involves the artist injecting the ink precisely between the conjunctiva and the sclera layers — with the main risk, of course, that the client can go blind. In April, Sao Paulo tattoo artist Rafael Leao Dias, who said he'd studied eyeball work for two years, successfully turned dos Santos's eyes into pools of dark ink. "I cried ink for two days," he told a local blogger. BME.com said eyeball tattoos have been reported for nearly 2,000 years.