When you see a famous hiney, and it's right in your face what do you do!  Well if the rear belongs to Beyonce and that guy is a random fan...you swat it!  Not much can be told from the horrible video, but it almost seemed like she enjoyed it.  Hova will not be happy!  She threatened to have him escorted out of the building, but he got to stay for the entire show, and has a great story to tell.  I think it's just enticing others to get a few pops in, hopefully there will be some extra security next time.