Pharrell Williams joined The Simpsons for a not-so Happy cameo on Sunday night. Wearing his famous Vivienne Westwood hat, which first made an appearance at the Grammys 2014, Williams is seen being banished from Springfield by Mayor Quimby, but not before managing to break into a quick rendition of the monster hit song. His performance is abruptly cut short as he is tied up and saddled to a horse that trots off to the neighbouring rival town of Shelbyville.