An awesome way to express yourself at a metal/hardrock/punk gig/concert/show. You don't really see this happening in concerts for Good Charlotte, Fall Out Boy, etc, but more towards Avenged Sevenfold, Napalm Death, etc. You get the drift. People mistake moshing as jumping/pogoing, but that is not the case. You can get your ass kicked in moshing, but the hell with that, danger is part of the fun! You got people all around you to bounce back on your feet from. THATS moshing; letting the music control your body as the audience move like energetic molecules of a gas, bouncing off each other.
"That party last night was mosh."
2.) Some people believe that jumping at a rock concert is considered moshing.