Andrew "Dice" Clay has always been known for his rated comedy. However, in 1989, MTV featureed him in a three-minute Cher live introduction at the MTV Video Music Awards. He performed two of his notoriously adult-themed Dirty Nursery Rhymes on the show.
That 1989 performance led to his subsequent ban by MTV. The ban appeared to have sunk his career, as he was blacklisted from Hollywood. The ban was later lifted in 2011.
Clay has also been diagnosed with Bell's palsy. This is a rare disorder that causes partial paralysis of the face. Bell's palsy has no proper treatment but generally wears off after a few weeks.