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1.
The act of purposely or accidentally grinding, grabbing ass, or groping in any way at a concert; mainly in the mosh where it is easy to get away with it
Person 1: Dude how was the concert last saturday?

Person 2: It was epic, l was grinding up against this really hot chick

Person 1: Sounds like you got some pretty awesome mosh tail
by Synyster101 May 21, 2011

Words related to mosh tail

grabbing grinding hair metal mosh pit shake tail thrash tits wag
 
2.
A dogs tail wagging in a circular motion, much like a moshing speed metal freak
Hey, check out out that Shi-Poo doing the mosh tail.
by Schwinkmartindale July 05, 2008