TMZ reports:
Mrs. Carter was performing “Irreplaceable” at the Forum in Copenhagen … when a dude with front row seats lunged on to the stage and delivered a full 5-fingered smack to Beyonce’s left butt cheek.
Beyonce was PISSSSSSED — she stopped dead in her tracks … stared at the guy and said, “I’m gonna have you escorted out of here.”
It’s unclear if she followed through on her threat.
Watch video below:
http://www.tmz.com/videos/0_567irjyi
Source: TMZ