Justin Bieber and Busta Rhymes performed 'Drumma Boy' for the NBA commercial that aired on Christmas Day.  Justine Bieber and Busta Rhymes are known basketball fans it was only right for them to do the commercial for the NBA especially with there new song together 'Drumma Boy.'  You can catch performance shots of Justin Bieber and Busta Rhymes with montage shots of NBA player highlights.  Check out the commercial below and let us know what you think by leaving a comment.