Meet Justin, who brought a sign that said “Can I rap for you?†to Jay Z’s Greensboro concert on Sunday. (TMZ says he’s not a plant!) Jay brought him onstage, gave him a mike, and then let him rap the “Clique†verse — except for the drug-dealing part, which Jay interrupted. Then Justin asked if he could go backstage, because Justin is fearless. This whole thing is charming!