Well, no one likes it when the ex is brought up in conversation unexpectedly. Bit rude.

The Biebs reportedly lost his cool during a four-and-a-half hour deposition in Miami concerning photographer Jeffrey Binion, who claims Justin set his bodyguards on him. More specifically, he's being accused of ordering bodyguard Hugo Hesny to choke Binion and steal his camera equipment last June outside a Miami recording studio.

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 got just a smidgen out of hand

The lawyer repeatedly asked him whether Gomez was present during the alleged incident and Justin's own legal rep, Howard Weitzman, said his client was being harassed. When the questioning continued, Justin 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 obviously on the defensive. When he responded to a query by saying, "Yeah", the lawyer asked, "Do you mean yes?", to which he scoffed, "What the f**k is the difference between yeah and yes?!" Hate to say it, but he's got a point.

Unsurprisingly, he remained unimpressed by the cross-examination, allegedly saying: "What is this, 60 Minutes?" ' and quipping, "OK Katie Couric, what's your question again?"

The lawyers are expected to cover every paparazzi fight ever as well as Justin's "alleged" drug use.