Justin Bieber was in Miami today to answer questions regarding a civil suit filed against him by a photog who claims he was assaulted by one of the Bieb's beefy bodyguards. One could understand why the troubled singer, who turned 20 five days ago, would need a bodyguard or ten after what he pulled today in the courthouse. According to our mole, towards the end of the deposition when Bieber was asked a question about Selena Gomez, he threw a tantrum, ripping the microphone off, jumping up from his seat and running out of the room. A recess was called and, 15 minutes later, Biebs came back refusing to answer any questions about his ex. Much to the dismay of many, the petulant popster did not say he was running away because if he did, he'd have a lot of people helping him pack.