http://www.youtube.com/watch?v=TOXPSSZkFD0Today is G//Z/R bassist Geezer Butler’s 63rd birthday. He also played bass in a band called Black Sabbath. In honor of the master bassist, here’s “N.I. B.” with the bass solo intro intact. While the title is thought to stand for “Nativity In Black,” he claims it was simply about (former?) drummer Bill Ward’s beard, which he referred to as a ‘nib.’ Geezer, you’re one of the most iconic bass players ever, so have a damned good birthday.