Justin Bieber falls off stage in Canada (video)

Justin Bieber took an embarrassing tumble while performing on stage in Saskatoon, Canada on Thursday night. The Canadian singer was striding across the stage when he dramatically fell down a trap door. His fall from the stage comes on the heels of a chaotic few months for the singer. He's cancelled meet-and-greets with fans, wandered Boston barefoot and got into a dust-up in Cleveland.

Watch the video after the cut....