Justin Bieber & Mike Posner's Prank Wars on Believe Tour

JB and Mike Posner prank wars

Justin Bieber and Mike Posner started a prank war and we are all enjoying it to the fullest. As we all know, the Biebs is the ultimate prankster, and since Mike Posner has joined this leg of Justin's Believe Tour, it seems like the perfect time to "get each other good". During last night's Indianapolis show, JB and Posner entered into what looks like an all-out prank war --- MID-CONCERT! That's right, apparently Justin initiated the shenanigans when he ran on stage during Mike's opening set holding a mannequin?! We're not quite sure where that came from .... And are we the only ones that think it's a little odd that this is now the second time we've seen Justin chillin with a mannequin?

 Flashback to his make out sesh with the plastic head on Jimmy Fallon. It's just hilarious and so gross at the same time. Bringing it back to now, after Justin rushed the stage and surprised Mike with his plastic friend, it was time for Justin to take the stage, giving Mike a chance to retaliate. MP tweeted out QUOTE, "@justinbieber onstage now...I'm about to get him back....watch out!" Not long after, he shared a Vine that shows Posner decked out in Bieber's white concert gear and crashing the stage mid-JB performance.