Defending his ex: Nick Cannon was furious when a music producer claimed to have slept with his estranged wife Mariah Carey

It was meant to be a harmless rap battle in the name of entertainment on MTV show Wild ‘N Out.

However, presenter Nick Cannon was left furious after his guest, music producer Stevie J claimed he slept with his estranged wife Mariah Carey, who is now engaged to billionaire James Packer.

Stevie J, who stars in VH1 reality show Love & Hip Hop: Atlanta, worked with Mariah on her 1997 album Butterfly and produced her No.1 single Honey.

Defending his ex: Nick Cannon was furious when a music producer claimed to have slept with his estranged wife Mariah Carey

Clash: Nick (left) fell out with Stevie J (centre) during filming for Wild 'N Out on Wednesday, which included the latter's on/off wife Josaline Hernandez (right)

As the two men and their respective crews faced off in the rap battle segment of the sketch and improv show during filming on Wednesday, things took a nasty turn, according to TMZ.com.

Father-of-five Stevie, 44, alleged he had sex with pop star Mariah not once, but twice.

A fuming Nick, 35, then hit back at Stevie, suggesting he should be more concerned about his relationship with on/off wife Joseline Hernandez, alleging she was sleeping with rapper Rick Ross.

During the segment, America’s Got Talent host Nick alleged warned Stevie that ‘you’ll never work in this town again’ due to his connections.

Stormy: Stevie J and his on/off wife Joseline Hernandez, who currently star in their own spin-off reality show Stevie J & Joseline: Go Hollywood

Stormy: Stevie J and his on/off wife Joseline Hernandez, who currently star in their own spin-off reality show Stevie J & Joseline: Go Hollywood

Moving on: Mariah is now engaged to Australian billionaire James Packer

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