The language of rock

One of the great joys of Wikipedia is that because it is so massively generic and covers, essentially, everything you can find some rather interesting, straight faced, encyclopedic entries for subjects that become quite amusing. The following extract is taken from "Concert Etiquette" and concerns Rock Concerts:

"Concerts of rock music typically maintain more liberal norms. At concerts of hard rock, punk or metal, a mosh pit will often form in front of the stage, in which slam-dancing and the like may be performed, usually in an atmosphere of lively camaraderie and mutual assistance. Dancers who have fallen are helped up, and found items of clothing are held aloft to be reclaimed. In general, singing along may not be disapproved, especially during songs of an anthemic nature. Fans may shout or scream or whistle during songs, but not continuously. Male moshers are frequently shirtless, but total nudity is frowned upon."

'Slam dancing and the like', 'an atmosphere of lively camaraderie', 'total nudity is frowned upon' - what great phrases to use to give a rock concert crowd a sensible description.