Jay Z has had the rap game on lock for more than a decade. Has he found his replacement?

Last night (Sunday) at his Magna Carter World Tour in Greensboro, NC, a 12-year-old fan was holding up a sign that read, "Can I rap for you?" Jay gave the pint-sized rapper a chance of a lifetime by inviting him on stage and passing him the mic and the little guy rapped some of Jigga's lines from "Clique" and was doing pretty well before Jay cut him off mid-bar so he wouldn't curse.

Catch the video on TMZ.