Usher’s friends threw a surprise birthday party for him. The star was pleasantly surprised when greeted at The Box in NY by Trey Songz, L.A. Reid, DJ Ruckus, DJ Cassidy and Shawn Pecas for his 36th birthday. ‘He was shocked,’ a source said. He was treated with two burlesque shows and was brought on stage before being presented with a cake and being whipped.