Derek and Clive are controversial cult characters created by double act Dudley Moore and Peter Cook respectively on the records Derek and Clive (Live), 1976; Derek and Clive Come Again, 1977 and Derek and Clive Ad Nauseam, 1978 and a film documentary, Derek and Clive Get the Horn, 1979. The characters are seen as more foul-mouthed extensions of their earlier characters Pete and Dud. Though the recordings were far too controversial for television or a mainstream audience, Derek and Clive bootleg recordings circulated, becoming famous for their, mostly, unscripted dialogues, vulgar situations and copious use of profanity - especially the word "cunt".

Considered by many at the time as highly offensive, the comic sketches primarily took the form of bizarre, sometime drunken streams of consciousness led by Cook, with interjections from Moore. Memorable moments from the records include Clive claiming that the worst job he ever had was retrieving lobsters from Jayne Mansfield's bum, Derek claiming his worst job was cleaning up Winston Churchill's bogies (leading the pair to conclude that the Titanic was one such bogie), Clive claiming that he was sexually aroused by the sight of a deceased Pope lying in state and a brilliantly staged horse racing 'commentary' featuring horses named after sexual organs or their vulgarised derivatives.