If Windex hasn't offered the Biebs an endorsement deal, they should get on that.
Last month, Justin Bieber smashed into a glass wall backstage (who hasn't done that?!) in between songs during his concert in Paris. The 18-year-old pop star suffered a mild concussion, but he went back and performed another song for his fans.
But the impact of his collision really set in when Justin was walking down the stairs. Wednesday night, part one of the "Boyfriend" singer's All Around the World Special aired on NBC and showed the Biebs fainting and falling down on the stairs following his show. (Go to the 8:30 mark in the clip above for the start of the action.)