"Birthday Sex" is the debut single by American singer Jeremih. It is the lead single from his debut studio album, Jeremih (2009). The song was written by Jeremih, Elliot Prince and Keith James and produced by Mick Schultz. "Birthday Sex" peaked at number four on the Billboard Hot 100 and topped the Hot R&B/Hip-Hop Songs chart. The single has been certified 3× Platinum.