Three buddies went to a Justin Bieber concert in Madrid, Spain. One of them looked a lot like Bieber, and by acting aloof, they tricked some girls into thinking he was the real Justin. Soon, the mob snow balled into almost a riot of girls attacking the three boys. The shrieking makes my ears bleed. After a few minutes it really gets out of hand.

The video is going viral on sites like PerezHilton and Buzzfeed.