MediaWorks has apologised to MoreFM listeners after an expletive-laden rant by a popular night time announcer was mistakenly aired. The rant by MoreFM Nights co-host Joe Cotton was described by a listener as "foul mouthed" after it aired at 7pm on Tuesday. One listener told the NZ Herald: "Joe was unaware her microphone was still on and let forth a stream of f**ks and s**ts. She appeared annoyed about being called in to cover shifts without adequate preparation."