The rapper had just performed a medley of new hits and was sitting in the audience when the daring Brit -- as his Austrian fashion expert character Bruno -- flew overhead in a dove outfit, chanting, "Ich bin Bruno. Ich bin dove of peace."
Cohen's outrageous alter-ego 'suffered' an embarrassing wardrobe malfunction -- baring his naked backside, he landed upside down on rapper Eminem's lap.
Eminem screamed, "Are you serious? Are you f**kin' serious?" as his entourage rushed to free the rapper.
What appeared to be a joke quickly turned awkward when it seemed apparent that Eminem wasn't in on the gag.
As a suspended Cohen cracked jokes about the incident, stating, "Is the real Slim Shady about to stand up?" Eminem and his entourage left their seats and walked out of the Universal Amphitheater.
Before the awards started, Cohen was stunning red-carpet reporters -- he turned up as Bruno, wearing leopard-skin Speedo-style swimming trunks and T-shirt ensemble, topped off with a matching Bavarian hunter's hat.
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