look up any word, like ratchet:
 
1.
beautiful, fabulous, handsome, ect.
Gary: Hey Dan.

Dan: Yehs?

Gary: Your mum is look very groshing today ;)

Dan: Eff you Gary. Eff you.
by KristyMeowmix September 07, 2008
 
2.
grinding and moshing at the same time.

Because moshing is so '06
and grinding is very '07.
But it just wouldn't be a show without moshing so you combine it with grinding. Therefore creating groshing.
by Kelly! November 18, 2006