You might have wondered why 'Derek Bieber' has been trending on Twitter. Is it some weird Justin Bieber lookalike? Is it Justin Bieber's long lost brother? Is it just someone else with the surname Bieber? Well, we're hear to explain it all to you and show you the video from where it all started too. We're very helpful like that.

So here's the background. It was claimed earlier in the week that Justin Bieber acted like a brat on a recent American Airlines flight refusing to get a picture with the pilot and being rude to the staff.

However, in an interview with a reporter on the street Justin Bieber claimed this was a pile of poo and never happened. He said, "I don't think you should believe everything you hear, people make stuff up all the time, supposedly I'm dead today!"

The interviewer kept talking to/harassing Justin anyway. He asked, "When you're a celebrity like you and you hear stuff like that what's your first response?"

Justin replied, "I'm famous? I'm a celebrity? I didn't even realise. My names Derek I don't know what you guys are talking about. I'm just a lookalike I don't know why you guys are following be around with cameras."

The reporter didn't really know what to do. It was pretty funny.

Click NEXT to see the video...

 

 

 

  

And that's why Derek Bieber started trending all over Twitter! Because Justin Bieber has been up to his trickster ways again. Got it? Good!

What do you think about Justin pretending to be Derek? Reckon it was pretty funny? Think that whole being rude on the flight is not true? Comments below please!

Justin Bieber pranks Willow Smith!

Is this the ultimate Justin Bieber lookalike?

Does One Direction's Liam Payne look like Justin Bieber?