The dean of counterculture comedians, Carlin constantly pushed the envelope with his jokes, particularly with a routine called "The Seven Words You Can Never Say On TV."
When Carlin uttered all seven at a show in Milwaukee in 1972, he was arrested for disturbing the peace. And when they were played on a New York radio station, they resulted in a Supreme Court ruling in 1978 upholding the government's authority to sanction stations for broadcasting offensive language.