Jay-Z Rides the Subway, Adorably Explains Who He Is to an Adorable Old Lady

Today (which happens to be Hova's 43rd birthday), a 24-minute documentary on Jay-Z's 8-show stint that opened Brooklyn's Barclays Center in September was released via YouTube. One highlight of Where I'm From occurs when Jay takes the subway en route to his last show and sits next to a kind-faced older woman named…