Justin Bieber Suffers Concussion in Paris

..because he walked into a glass wall.

No, really. He walked into a glass wall and then passed out.

He told TMZ on Thursday he was out for 15 seconds after he walked into the see-through barrier backstage between songs during a secret show in Paris.

Bieber said he was disorientated by the incident but ended up finishing the show. Doctors confirmed it was a concussion, but he will make a full recovery!

“I’m fine. Just smacked my head and needed some water. All good,” said the Biebs on his twitter.

At least he doesn’t take himself TOO seriously: “I will see u again Glass. I will have my revenge. BIEBER vs GLASS. MGM LAS VEGAS 2013. lol. #GottaLaughAtYourself.”