81-year-old Warren Buffett — one of he richest men on the planet — got downright gangsta at the grand reopening of Jay Z’s 40/40 nightclub in NYC last night … throwin’ up the Roc-a-Fella sign … like a boss.
It was the first time Jay’s been out in public since the birth of his daughter Blue Ivy — though Beyonce and B.I. didn’t make it out to the party.
Jay and Buffett have been friends for years — and appeared on the cover of Forbes together back in 2010.
