What a way to end 2015... I'm honestly not even sure who started this one. Was it 5 Seconds of Summer? Was it Justin Bieber? Maybe it was The Rolling Stone magazine interviewer!!! For everyone that is lost up to this point I'll give you a quick run down... Australian boy band, 5 Seconds of Summer, was featured on the cover of Rolling Stone magazine.

Being featured on the cover means you are interviewed and when the interviewer wasn't asking the boys about their sexcapades, he ignited a beef that saw Twitter blow up! One of the boy band members, Michael Clifford, said "I think he hates us" in reference to Justin Bieber. This prompted Bieber to go on a Twitter tirade in what are now some deleted tweets. The gist of it was Bieber pretty much telling the boys of 5SOS that he has never heard of them and that they shouldn't use his name just to promote themselves. Bieber might have been especially hurt because the boy band claimed that during Bieber's AMA after party, he kept his album on loop "for 2 to 3 hours." Bieber was outraged at this claim and tweeted back, "you may have been at the wrong party." You can check out the full story and deleted tweets here...