Ice water Challenge goes viral in Bollywood

Famous pop singer Daler Mehndi has taken the challenge to spread awareness for ALS victims and has nominated superstars Amitabh Bachchan, Shah Rukh Khan and Priyanka Chopra to take the challenge next.Watch the singer pour three buckets full of ice cold water on himself after breaking into a jig on 'Tunak Tunak Tun'. "I'm doing this for a good cause," says the singer in the video.