Prime Minister Najib Abdul Razak joined Youth and Sports Minister Khairy Jamaluddin in a game of ping pong last week and the video has since gone viral. <br /> <br />Facebook user Dato'Seri Zaienal's video has been viewed almost half-a-million times, and has close to seven thousand shares on the social networking site. <br /> <br />Source: Dato'Seri Zaienal - Facebook