Internet sensation Keenen Cahill broke onto the scene by lip-syncing our favorite celeb’s songs on Youtube. Little did we know, Keenan suffers from rare genetic disorder called Maroteaux-Lamy Syndrome. The disease strikes one in 25,000 people,and has no known cure. Keenan shared the screen with 50 Cent during a Chelsea Lately episode singing long to Jeremih’s “Down On Me.”
