Mariah Carey has a special name for husband Nick Cannon. At Cannon’s birthday party at club Bank in Las Vegas the other night, the songstress presented him with a cake shaped like deejay turntables and inscribed with the message, “Happy Birthday DJ Sex Fingers — Love, M.C.C.” Carey then performed three of her songs for Cannon, including “I Want To Know What Love Is,” before turning the party over to Cannon to dee jay. Earlier that night, while performing at the Palms, Carey presided over the wedding pro posal of a gay couple.