It appears that there's a part in Beyonce's show in which the singer approaches the audience wearing one of the infamous "Mrs. Carter Tour" bodysuits and asks the fans to sing along to "Irreplaceable" with her. While most fans simply sing into the microphone Beyonce is putting below their mouths, this fan got a little carried away and decided to spank the singer.
Beyonce kept her cool and walked away from the fan to carry on with the show, but not before bringing the microphone back to her mouth and saying "Alright, boo boo. I will have you escorted out right now, alright?"
Watch a clip of the incident below courtesy of IconicJs.