Justin Bieber revealed that he had to shave his head after he got doused in green goo at Nickelodeon\'s 25th Annual Kids\' Choice Awards. The singer tweeted to tell his followers that he had to shave his head because the slime wasn\'t coming off, reports aceshowbiz.com. \"Will [Smith] got me. Classic. only one bad thing though. — slime didn\'t come out. hair grows back. looking like I did when I was 10,\" the 18-year-old further wrote. \"I haven\'t shaved my head in a long time. feels kinda cool. I used to shave it every summer, all good, it grows back.\" From: Gulfnews