osition when he was quizzed about Selena Gomez.
The pop star reportedly lost his cool during a four-and-a-half hour deposition in Miami concerning photographer Jeffrey Binion, who claims Justin send his bodyguards to beat him up.
When the snapper's lawyer turned the line of questioning to the 19-year-old singer's on/off ex-girlfriend Selena, TMZ is reporting that things spiralled out of control.
The lawyer repeatedly asked the teen idol whether the former Disney star was present during the alleged incident and Justin's own legal rep, Howard Weitzman, said his client was being harassed.
The Baby hitmaker finally jumped up and left the room, reportedly shouting, "Don't ask me about her, do not ask me about her!"
After taking five minutes to cool off, Justin is said to have been on edge when he returned.
When he responded to a query by saying, "Yeah", the lawyer asked, "Do you mean yes?", to which he scoffed, "What the fuck is the difference between yeah and yes?!"
The sarcastic star remained unimpressed by the cross-examination.
Justin allegedly said, "What is this, 60 Minutes?" and later quipped, "OK Katie Couric, what's your question again?"
The star is being accused of ordering his bodyguard Hugo Hesny to choke Binion and steal his camera equipment last June outside a Miami recording studio.
The lawyers are expected to cover every paparazzi fight ever as well as the pop pin-up's drug use.