Long running animated series The Simpsons is no stranger to the occasional expletive, so Pulitzer Prize-winning playwright David Mamet fit right in when he lent his voice to the show's January 23 episode. Mamet, whose latest play Race ran for more than nine months on Broadway last season, is seen playing a version of himself working on a fictional TV series that Homer adores. The show spoofed Mamet's knack for vulgarity and jokingly revealed the inspiration for one of his most famous plays. Take a look below!