If you aren’t on your best behaviour at your next Justin Bieber concert, you better be prepared to say Sorry as JB has shown he has no time for messing.

During his sell-out Atlanta show on Friday night, Justin was interrupted mid-speech by a fan who decided to throw something onto his stage and – according to E! – the singer was less than impressed with the move.

Taking the opportunity to make a point, Justin told the crowd: "Take this moment to listen and try not to give me a hat or whatever you're trying to throw onto the stage right now, because I probably don't want that sh*t."  Ouch!

Although his comments received a huge round of applause, the Love Yourself performer quickly realised how harsh his message may have sounded and so, not want to break a Belieber’s heart, he added: “Sorry that was mean.”

The effect of the interruption was then obvious as Justin needed a moment to get his performance back on track.

He said: "But yeah, no I lost what I was going to say."

"I was deep into, like, a mode and a zone. I was — I was into it. Now I'm out of it. I'll get it back. Just give me a second."

The star – who is currently touring the US as part of his Purpose World Tour – then continued his show with a song before once again apologising for calling out the fan: "Sorry for throwing your hat but you ruined the moment…Whatever, let's do it."

It sounds like Justin really did feel bad after all.