After ex-boyfriend Eminem took a potshot at her on his new album Relapse, Mariah Carey decided to beat the rapper at his own multiple-personality game, by dressing as him on the NYC video shoot for her latest single, "Obsessed" yesterday.

Sample Carey "jabs":

"You're so lame....Ooh boy, why you so obsessed with me? Ohh finally found a girl that you couldn't impress/Last man on the earth/still couldn't get this."

Between MTV's Bruno stunt and Mariah's doppelganger performance, it looks like Eminem has become more participant/victim of celebrity pranks than actually well you know, doing anything.