Yea, Thats what You get, says Pete Wentz

During a Fall Out Boy concert, a security guard issues a beating to a deranged fan “messing with my [Pete Wentz's] friends.” However, it was never really clarified what exactly he “got.” All I saw was a big burly man jump into the crowd swinging arms, while Pete dove on top of the sweaty pile of men with something that looked like a smile.