The insane dancing associated with electro gigs. Dancers either mimic the movements of the DJs or do their own thing, normally the latter one. Doing your own thing consists of seizure like movements coupled with jumping.

People have been known to suffer broken toes and occasional kidney punches from such an activity.
Two people holding onto each other while dancing at a gig.

Person 1: Hang on! The break in the song is coming!
Person 2: Oh man!
Person 1: Watch out for this guy in the white shirt, his electro moshing is going to knock us out!
by whydee November 27, 2011
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