Find Out How Justin Bieber and Mike Posner Punked Each Other On Stage

Mike Posner recently joined Justin Bieber's "Believe" tour as an opening act and, of course, the guys have been punking each other right and left. Boys will be boys, right?

During the Indianapolis show this week, Bieber ran onstage with a mannequin during Posner's opening set. Surprise!

That's a mannequin in the middle (Twitter)

Then, it was Posner's turn to get him back. "@justinbieber onstage now…I’m about to get him back….watch out!" he wrote before getting revenge.

Naturally, Posner decided to storm the stage wearing Bieber's actual tour outfit.

We're sure there will be plenty more of these antics as the "Believe" tour rolls on. Bieber is a big fan of practical jokes.

Remember the time he interrupted Willow Smith's performance of "Whip My Hair" with a cowbell?

The Director of Editorial Operations at Livingly Media and lover of all things sprinkles.