Rapper Eminem got a bum deal when comedian Sacha Baron Cohen landed on him bare-backside first.

The incident threw the MTV Movie awards into chaos with the singer storming out of the theatre after finally freeing himself from beneath the Ali G and Borat creator.

Cohen, appearing as his latest alter-ego Bruno, was dressed as a "dove of peace" as he was lowered from the ceiling of the auditorium to present the Best Male Performance award.

But rather then land on stage to hand over the gong he fell onto the shoulders of a startled Eminem.

A brief scuffle ensued as minders tried to drag Cohen off the rapper who then swore and stood up before storming off.

Cohen was still airborne when he announced High School Musical's Zac Efron had won the award and was then hoisted to safety.

"It's the coolest way I've ever been invited up to accept one of these," grinned Efron.

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