One unlucky Barcelonian Belieber found out the hard way that the stage wasn’t the only place Justin Bieber delivered his hits.

Indeed, Biebz has obviously been taking a note or two from friend Floyd Mayweather as he punched a young man in the face after he (a presumed fan) tried to reach his hand into a moving car to touch the ‘Sorry’ singer.

Did you miss the mayhem?  Look below:

Your thoughts?