Justin Bieber always seemed like a sweet sort of boy to us, but after what we witnessed at Radio 1’s Big Weekend we’re not sure he’s as sweet as he looks. Justin’s “people” had made it very clear that nobody could ask him about his rumoured birthday tattoo, but Radio 1’s Fearne Cotton couldn’t resist a little question. After all, she’s a pretty big fan of tattoos herself, and that’s probably the only thing she has in common with a 16-year-old boy. Anyway, Justin didn’t like her breaking the rules one bit, and after refusing to reply he got up and stomped out of the interview. Oo and er. Later that same day, Justin also commandeered his very own backstage buggy and drove around flicking the finger at everyone. However, karma came back to bite him on the Bieber-hind later on when he took to the stage and was promptly greeted by boos. See, Justin – diva behaviour will get you nowhere!