Justin Bieber's best week ever (for media members, that is) got even more noteworthy March 8th as the singer left his London hotel.

In video obtained by TMZ, Bieber and his body guards rushed to their SUV. However, during the dash one of the paparazzi claimed his brush up with the singer was an assault—something Justin didn't take too kindly to. Though Bieber had already gotten into his car, the cameraman must've really pushed a button when he told Bieber to "f*** off back to America" and called him a "f***ing little moron." The 20-year-old had to be "restrained" from attacking the paparazzi thereafter, as Bieber screamed "I'll f***ing beat the f*** out of you!" while reportedly trying to swing at the man.

"Ahhhhh! Rough morning. Trying to feel better for this show tonight but let the paps get the best of me," Bieber tweeted. "Sometimes when people r shoving cameras in your face all day and yelling the worst thing possible at u...well I'm human. Rough week," he said.

"Not gonna let them get the best of me again. Gonna get focused on this show tonight. Adrenaline is high now. Gonna put it on stage," he added. "Only way someone can break u if u let them."

This has been an extremely publicly-scrutinized week for Bieber.

Bieber, who turned 19 on May 1st, wrote "worst birthday" on his Twitter page just after writing "big night ahead" just 10 hours earlier.
According to E! News, Justin's circus-inspired birthday at Cirque du Soir in London didn't really go as well as he had planned. Apparently, Justin's crew didn't get any love from the party's security and the singer and his group were asked to leave. Why, do you ask? Well, as the UK's Daily Mail reported, Bieber's rumored 17-year-old girlfriend Ella-Paige Roberts Clark and 14-year-old friend Jaden Smith didn't meet the legal drinking age of 18 at the club and denied entry and left within minutes of arriving.

The birthday fallout was followed by the singer's late arrival to a concert at London's O2 arena, in which he was booed and ripped by a music critic and a hospital visit after Bieber passed out following one of his later shows this week.

"F***k off back to America" might not be the worst idea the paparazzi has ever screamed at Bieber.